Whale Sharks: Nat Geo documents unusual feeding behavior

Whale sharks - the largest fish on the planet. For many of us who dip below the surface of the sea, either with snorkels or scuba, catching a glimpse of any large marine animal is always a powerful and memorable experience. It almost seems surreal; something so large gliding past you like a zeppelin in a liquid sky.

That feeling is heightened when the leviathan in question is a whale shark. Not that you are concerned about becoming prey to the whale shark - these animals are filter feeders like baleen whales - but it's a shark all the same. Throughout the world there are several "hot spots" for finding small congregations of whale sharks, but it's not always guaranteed. Many divers can tell you of their experiences being skunked, and then learning about the sharks that appeared the day after they departed.

For underwater photographer Michael Aw, luck was on his side while taking pictures for National Geographic. Not only did he find whale sharks off the northern shores of Papua, Indonesia, but he was able to document an unusual behavior. The whale sharks had come across a reliable food source, that of the baitfish caught by local fishermen. With hundreds of small fish corralled into fishing nets, the sharks would grab at the nets, trying to make off with an easy meal. It would appear that it runs in the family - whale sharks are opportunistic feeders, like their smaller shark cousins.

Accompanying Aw's photos in Sharing with Sharks for the October issue, on sale September 27th, and online edition of National Geographic, Jennifer Holland wrote, "The giant fish is hard to study because it is hard to find and track. By tagging individual specimens, scientists have learned that whale sharks can log thousands of miles in years-long trips. But they sometimes disappear for weeks, diving more than a mile down and resting in the chilly deep for a spell. No one has ever found mating or birthing grounds.

Whale sharks are ordinarily loners. But not in one corner of Indonesia. [Michael Aw's] photographs, shot some eight miles off the province of Papua, reveal a group of sharks that call on fishermen each day, zipping by one another, looking for handouts near the surface, and nosing the nets - a rare instance when the generally docile fish act, well, like the rest of the sharks."

One might question whether these sharks are becoming habituated or "trained" to look to the fishermen for their food. This has been a concern leveled at others in the eco-tourism trade who are accused of attracting animals, in particular sharks, to the extant that it potentially interferes with the animals normal hunting instincts. But research has shown that what is offered as an attractant is usually insignificant compared to the animal's normal nutritional requirements and with whatever behavior modification that might take place, its effects are transitory.

But it can provide for some amazing moments, as Michael Aw's photos can attest. You can read the entire photo-article in the October issue of National Geographic or visit the National Geographic website.

Filmmaker's Journal: a squid invasion on National Geographic Channel

It's said that good things are worth the wait. I'm hoping that is the case with an episode of Hooked that airs this Friday on the National Geographic Channel. It's been just a little over a year ago when I traveled south to Baja, Mexico with my good friend, Scott Cassell, to study and film the Humboldt squid - a predator whose numbers have been exploding in the Sea of Cortez.

Michael Hoff Productions, which produces the series Hooked for Nat Geo, sent a crew down to Baja to document our efforts to film the squid and conduct some important experiments and observations with guide Dale Pearson, boat captain Tom Loomis, and marine biologist Steve Blair that would illustrate the voracious nature of this squid and what that means for marine ecosystems and many commercial fisheries.

The program focuses on Scott, as he has a long history of studying the Humboldt squid up close and in the wild. And that can be dangerous; Scott has had several broken bones and lacerations due to the tremendous force of the squid's formidable beak.

Having not seen the finished program, I am hoping that it clearly presents the issues regarding the expansion of the squid's range without becoming too melodramatic. But having spent some time with these creatures, I can tell you from experience that they are not to be underestimated. In fact, after having spent many years filming large sharks, this was the first time in a long time where my adrenaline was really pumping. Dangling from a steel cable 50 feet down in 250 feet of water, at night wearing anti-shark chain mail and peering through my viewfinder with only the dim glow of red underwater lights, only to have a 5 to 6 foot squid charge you suddenly - well, it's a little disconcerting.

So, shameless promotion: if you're watching cable this Friday night, tune in to the "Squid Invasion" episode of Hooked on the National Geographic Channel (May 13th, 9:00pm).

Attacking Oil: new research in dealing with the effects of oil spills

While developments in alternative energy - like solar, wind, and thermal - continue, the harsh truth is that it will be some time before these and other energy sources can make a considerable dent in our reliance on fossil fuels. And so the reality of someday having to contend with another spill, perhaps on the same level as the Gulf oil spill or worse, is very real.

Therefore, while science continues to look towards alternatives, it is also looking at ways to deal with the effects of spills on the environment. Chemical dispersants, while perhaps being able to actually disperse the oil, have not been given a clean bill of health, so to speak, when it comes to ancillary effects on the environment, particularly when used at the high levels administered in the Gulf oil spill. Scientists are trying to find more natural or organic methods to better treat oil in the soil, plants, and even on animal life, like birds.

Here are two interesting videos from National Geographic Daily News that highlight some of the research and progress that is being made in this approach. If successful, it could provide a means to better combat the effects of an oil spill. But these will never replace the need for more alternative fuels - just like methadone is only a temporary replacement for the heroin addict. Getting off the addiction is the ultimate and only definitive cure.

Citizens of the Sea: making sense of the marine census

The ocean is vast. For people to contemplate its complexity, requires years of study and an open and encyclopedic mind. So, for most of us, we focus our attention on areas of personal interest - a particular species like whales, sharks, or turtles; or ecosystems like coral reefs or saltwater marshlands - something we can wrap our thoughts around more easily. The big picture is often overwhelming and can lead us to believe that the oceans, overall, must be doing fine because there's just so much of it to go around.

With the recent completion of the Census of Marine Life, this 10-year project affords scientists, educators, and policy makers with a wealth of detailed information cataloged in a database of over 22 million entries - a snapshot of the ocean's biodiversity that is comprehensive and yet, by admission of those involved, just scratching the surface. Ian Poiner, chair of the Census Scientific Steering Committee, summed it up this way, "More than 2,000 scientists. 80-plus nations. 400 expeditions. $650 million. 10,000-plus possible new species. 2,500-plus publications."

One of those publications is Citizens of the Sea, written by one of the project's scientific leaders, Nancy Knowlton, Ph.D. (National Geographic Society, 2010). The book combines images and information from the census with a well-structured overview of the "who, why, and how many" of marine biodiversity that is both instructional and accessible. This is not a burdensome volume intended for just a researcher or academic; nor is it a literary softball catering to grade-schoolers. Knowlton's personable writing style affords her the ability to cover a lot of ground and provide the reader with an illuminating window into the aquatic world.

In a recent interview, I asked Dr. Knowlton about her involvement with the census and what the overall results have been:
RTSea: How did you first become involved in the Census of Marine Life?
NK: I was a member of the US National Committee on the Census of Marine Life (most of the world was represented by national or regional groups working on the Census). At one of our meetings we decided you can't have a Census of Marine Life without censusing coral reefs (the rainforests of the sea), which is how the coral reef program was launched and which I helped lead.
RTSea: What do you feel is the main contribution of the Census that sets it apart from other research?
NK: The census was the first of its kind to focus on the overall biodiversity of the entire ocean, and to link its past, present and future. There are many programs that have tackled specific ecological questions related to the sea, but biodiversity is often ignored. The problem is that except for a few groups (like fishes, corals and snails) we know so little that biodiversity is hard to study in its entirety.
RTSea: Will the Census be analyzing and drawing conclusions or basically providing data for others to work with?
NK: The Census has already analyzed and drawn many conclusions since it began ten years ago. But there is also a wealth of information in the giant electronic database that the Census created, which will continue to grow and inform future studies.

In tackling this "wealth of information" provided by the census, Citizens of the Sea focuses the first eleven chapters on the animals themselves then the last few chapters turn to interaction with man and, ultimately, the impact we are having on the oceans today. Each chapter includes topics that are covered with a single page of text and an accompanying page of images from the census catalog. As an example, a chapter on Appearances Are Everything included topics like Blending In, Deception & Distraction, Standing Out, Stranger Than Fiction, and more. This helps to make the information easy to digest. In fact, I often set aside a few minutes, intent on reading a topic or two, and found myself having read twenty pages in no time.

Many of the most striking images included in Citizens of the Sea are those of the ocean's smaller creatures - which actually make up the greatest portion of the ocean's biomass. From bacteria to plankton to tiny pteropods, fish, and crabs; by sheer numbers the oceans truly belong to the smallest of creatures. While this expands our concept of marine diversity, it also highlights its fragility.

RTSea: What did you personally find to be the most remarkable find or findings from the Census?
NK: Well, our project found that there is more marine biodiversity in a couple of square meters (yards) of coral reef than in all of Europe's seas. I knew the biodiversity of reefs was enormous but that still really surprised me.
RTSea: What do you hope that the general public and/or the policy makers will learn from the Census?
NK: I hope they learn that biodiversity is fascinating, inspiring, and valuable, but cannot be taken for granted.

By examining many aspects of marine living with information on a variety of creatures, Citizens of the Sea deftly illustrates both the complexity and the commonality within marine biodiversity. From 200-ton blue whales to the 350,000 bacteria that can be found in a single drop of seawater, it is an astonishing web of life that must also depend on us as much as we depend on it.

RTSea: As a nature filmmaker, I am always concerned with finding the right balance between showing the beauty of nature and making sure that people realize the threats and damage nature is enduring. Are you concerned that the Census, theorizing that there are millions of species in the sea, might make some believe that the oceans are healthy and less threatened than others would have us believe?
NK: This is always a potential problem, but I think the Census did a good job in doing both - celebrating diversity while documenting what we have already lost or could easily lose.
RTSea: What do you hope readers will take away by reading Citizens of the Sea; what do you hope it will motivate them to do?
NK: The sea is a wondrous place but we need to take care of it. There is an almost infinite variety in the way marine creatures make a living, and even though we don't live in the sea, we depend on it. The Citizens of the Sea both amaze and amuse us, in addition to providing much of the oxygen that we breathe and the food that we eat. But they cannot vote and are counting on us to protect them.

With engaging writing, a bevy of sidebar facts, and striking photographs, Citizens of the Sea offers something for everyone - from those studying the oceans to the mildly curious to, well, those who just don't have a clue. It succeeds in framing the big picture of marine biodiversity as a nation of interdependent citizens who can't vote but rely on the roles given to each by nature as a means of survival of the whole.

As outsiders, what kind of diplomacy shall mankind exercise? Are we to be good neighbors or invading plunderers?

Citizens of the Sea is available at National Geographic, Amazon, and other bookstores.

Jacques-Yves Cousteau: centennial celebrates a pioneer

On this centennial of the birth of Jacques-Yves Cousteau, I'd like to reprint an article from today's National Geographic News, that pretty much says it all as to why this man was such a seminal figure in bringing oceanography and ocean conservation to the masses:

Jacques Cousteau Centennial: What He Did, Why He Matters
Marking Cousteau's hundredth anniversary—five successes, one great legacy.

By Ker Than for National Geographic News
Published June 11, 2010

The late Jacques Cousteau's hundredth birthday is inspiring headlines and, Friday morning, a Google doodle—perhaps the ultimate Internet accolade.

Why is the ocean explorer such a legend? Here are five good reasons.

1. Jacques Cousteau pioneered scuba gear.

With his iconic red beanie and famed ship Calypso, the French marine explorer, inventor, filmmaker, and conservationist sailed the world for much of the late 20th century, educating millions about the Earth's oceans and its inhabitants—and inspiring their protection.

Little of it would have been possible without scuba gear, which Cousteau pioneered when in World War II he, along with engineer Emile Gagnan, co-created the Aqua-Lung, a twin-hose underwater breathing apparatus.

With the Aqua-Lung, Cousteau and his crew were able to explore and film parts of the ocean depths that had never been seen before.

(Get the inside story of Jacques Cousteau's adventures with the National Geographic Society.)

2. Cousteau's underwater documentaries brought a new world to viewers.

Jacques Cousteau's pioneering underwater documentaries—including the Oscar-winning films The Silent World, The Golden Fish, and World Without Sun—"had a storyline," said Clark Lee Merriam, a spokesperson for the Cousteau Society.

"Their message was 'Come with me and look at this wonderful thing and see how it acts and behaves,'" said Merriam, who had worked with Cousteau for nearly 20 years before the explorer died in 1997.

"It was a deep and complete introduction for the general public to the undersea world."

(Download wallpaper of Jacques Cousteau underwater and deploying a "diving saucer.")

3. Cousteau pioneered underwater base camps.

Jacques Cousteau and his team created the first underwater habitat for humans: Conshelf I, which begat Conshelf II and III. The habitats could house working oceanauts for weeks at a time.

"He was ahead of even the United States Navy, which was doing the same thing in proving people could live and operate underwater for extended periods of time," Merriam said.

Broadly speaking, "it's technology that industry uses now, because it's a lot less expensive to keep someone down there working than to have them down there for 30 minutes and come back up," she said.

4. Cousteau helped restrict commercial whaling.

Cousteau "intervened personally with heads of state and helped get the numbers necessary for the [International Whaling] Commission to pass the moratorium" on commercial whaling in 1986, Merriam said.

The moratorium remains in place today, though some countries still hunt whales in the name of scientific research.

5. Cousteau helped stop underwater dumping of nuclear waste.

Cousteau organized a popular campaign against a French-government plan to dump nuclear waste into the Mediterranean Sea in 1960—and took his fight straight to the president of the republic.

Cousteau "faced off with General de Gualle in France about the proposed dumping, and he continued to oppose nuclear power," Merriam said.

"He acknowledged that it was a clean power source and full of possibilities but felt that—as long as we're dealing with waste that we don't know how to handle—we should not pursue it."

In the end, the train carrying the waste turned back after women and children staged a sit-in on the tracks.

Jacques Cousteau, Late-Blooming Environmentalist

Cousteau's films and books could make the ocean seem like a boundless and bountiful wonderland, bursting with life and blessedly isolated. But the captain himself knew better.

"He thought it was a conceit of humans that the oceans are endless and that we can keep turning to them as an unending source of food and anything else we wanted," Merriam said.

By all accounts, Cousteau was not always an ardent environmentalist, nor was he always particularly sensitive to the creatures he was filming in the beginning. "He started out as a spear fisherman and a world explorer, not a guardian," Merriam said.

Merriam points to a "horrific" scene in The Silent World in which the Calypso collides with a baby sperm whale. Believing the animal to be near death, the crew shoots the animal—then also shoots sharks that attack the now dead whale.

Merriam remembers when The Silent World was remastered about 20 years ago. "Everyone in the organization said we have to cut out these really ugly scenes that show all of this bad behavior."

But "Cousteau said, 'No, no we're not. It was true, and it shows how far we've come and how dreadful humans can be if we don't curtail ourselves,'" she recalled.

Jacques Cousteau Legacy Endures

If Cousteau were alive today, he would probably be saddened by how little has been done to address pollution, overfishing, and other threats to the world's oceans, said Bill Eichbaum, vice president of marine and Arctic policy at World Wildlife Fund (WWF), an international conservation organization.

(Read why Jacques Cousteau would be "heartbroken" at our seas today—commentary by his son Jean-Michel.)

But Cousteau wouldn't be discouraged, said Eichbaum, who worked with Cousteau briefly during the 1970s.

"He would be passionately concerned, and I think, even more articulate and aggressive in urging governments, companies, and individuals to protect the environment," he said.

For her part, the Cousteau Society's Merriam said, "We miss the visionary, and we're glad he set us on the path that we're trying to keep on."

Trafficking In Wildlife: Nat Geo article takes it on

If you do not currently subscribe to the National Geographic magazine or peruse it's web site, here's a good reason to: the January, 2010 issue has an excellent, informative, but ultimately disturbing article written by Bryan Christy about the wildlife trade - both legal and illegal - in Asia.

Christy details the rise and ongoing operation of one of Asia's most successful and notorious wildlife dealers and his operation that entails collusion - or at least a blind indifference - from government officials. We're talking about the very people who are expected to enforce the laws and regulations to curtail the illegal activities of the very same wildlife dealers.

And the illegal wildlife trade also exists supported by a complex structure of fronts and third-parties including zoos or animal parks and captive breeding facilities - all used to deter suspicion while endangered or highly regulated flora and fauna are smuggled through, sometimes with documentation to support their supposed "legal" status.

But the corruption and demand for exotic wildlife based on centuries-old beliefs in homeopathic medicine that pervades these poor or developing countries is not the only issue. Market demand in the legal wildlife trade for life animals and animal parts is certainly fueled by Asian customers and but also by the biggest customer of all: the United States.

Sadly, Asia's wildlife trade is big business: over 13 million live animals were legally exported from Southeast Asia from 2000 through 2007, over 30 million animal parts (dead stony corals and reptile skins are prime examples). The scope of legal trade in wildlife is disconcerting enough - and actually greater than the illegal trade - but endangered species command such high prices on the black market that the illegal trade remains a highly profitable activity.

Kudos to National Geographic - an organization not only dedicated to wildlife preservation but one that must regularly deal with many of the agencies under suspicion - for tackling this subject head-on.

On a lighter note, the same January issue has a great photo article about anemonefish, also known as clownfish, or "Nemo, Nemo!" if you have small children. Accompanied by striking images from Nat Geo's resident underwater photographer, David Doubilet, James Prosek writes about the symbiotic relationship these colorful reef dwellers have with their anemone hosts and their current status in the wild and as a popular home aquarium fish.

If you want to learn more abut the legal and illegal trade in exotic or endangered wildlife, visit these web sites:

• WildAid.org
• CITES.org
• Traffic.org

Expedition Great White: reeling in white sharks for research

On November 16, the National Geographic Channel will premiere Expedition Great White, a special program that details satellite tagging research done on great white sharks at Isla Guadalupe. Using rod-and-reel techniques to pull white sharks on board to take blood samples and attach satellite tags, the researchers hope to learn more about the long-range migrations of these sharks. To promote the show, Nat Geo has released a promo video and pictures of the researchers in action. Click here to view a photo gallery from OutdoorLife.com. Here's the promo video:



There are differing views amongst shark advocates as to whether the method used to catch these sharks is appropriate or humane.

"While I don’t doubt the good intentions of the researchers, based on the pictures, it clearly doesn’t appear as if the sharks were "unstressed" throughout the experience. Being hooked, landed, and tied down seems like it would be a fairly stressful situation, although I’m not a 'shark expert,' so don’t quote me on that. Don’t get me wrong. I understand that the knowledge gained from the research could potentially benefit the species as a whole, but I have to wonder if this approach is really the ideal technique for gathering information about the white sharks at Guadalupe." - The Dorsal Fin

"As a commercial shark diving operator I am o.k with credible science done by professionals. This is real science. The fact that National Geographic is there to document does not diminish the effort. There's also a very fine line between 'credible science' and the ad hoc 'experiments' you often see on Discovery Channel Shark Week that have no basis in science, and are often played out so film crews can do questionable and increasingly invasive things with sharks." - Shark Divers

The rod-and-reel approach appears to have come out of the need to attach the satellite tag using a bolt-on method, which requires immobilizing the shark for an extended period of time. While the need to acquire a reliable and viable stream of data over an extended period of time is critical to the success of this type of long-range migration research, one wonders whether the rod-and-reel technique is the best and most humane approach that today’s technology has to offer. Perhaps it is, based on the size and weight of the tag. Perhaps that means we need to re-think the tag itself.

If one considers the trauma placed on the animal, considering both the stress of being hooked and reeled in and the physical stress of an animal this size being removed from the water, it begs the question: could microelectronics devise a smaller, lighter tag that could be attached using methods similar to those used for regional telemetry tags – a simple hooked barb and wire leader attached via a pole spear? Looking at the photos in the Outdoor Life photo gallery and watching the Nat Geo promo video, I get a sense that a very elaborate and expensive mousetrap was devised to catch and hold these sharks out of the water. Could that effort and expense been spent on devising a better mousetrap?

Or would that not have provided exciting enough television programming?

There’s a lot here we don’t know. Was every shark that was hooked, successfully reeled in? Was every shark that was reeled in then successfully brought on board? Was every shark successfully revived? Was there follow up as to the health and behavior of every shark that was caught and released? Were there negative outcomes and would we ever hear about it? If there was any bad news, I question whether we would see it on television, as I would expect there would be some negative reaction from CONAP, the Mexican agency that is charged with maintaining the health of Isla Guadalupe’s flora and fauna.

In June, at the BLUE Ocean Film Festival, I listened to Greg Marshal, the man behind the Crittter Cam, talk about the evolution of his invention. It was clear that the effort was being made to utilize advances in miniaturization to reduce the size of the Critter Cam to improve performance, simplify attachment, and lower the impact on the animal.

It’s an age old argument: what price do we – or the sharks – pay for the sake of scientific research and data? The debate continues.

The World Is Blue: review of Dr. Sylvia Earle's new book

THE WORLD IS BLUE

How Our Fate and the Ocean’s Are One

Dr. Sylvia Earle’s new book declares that conservation is promoting the wrong color

In her latest book, The World Is Blue, famed oceanographer Dr. Sylvia Earle makes a passionate and methodical argument for conserving the world’s oceans – not as one more item to be added to an ecological wish list, but as an issue that needs to be at the top of that list. The oceans need our undivided attention as it is these life-giving bodies of water that impact, regulate, and govern the environmental processes on land and in the air on which we depend.

“Even if you never have a chance to see or touch the ocean, the ocean touches you with every breath you take, every drop of water you drink, every bite you consume. Everyone, everywhere is inextricably connected to and utterly dependent upon the existence of the sea.”

At a time when going “green” is both necessary and trendy, Earle takes nothing away from our current terrestrial focus, but makes the strong case that the health of the oceans – the “blue” that makes up over 80% of the earth’s surface – must be of equal, if not primary, concern. Using facts gleamed from recognized scientific research and anecdotes from personal experience and those of other oceanographers, scientists and conservationists, she weaves a complex tapestry of interdependent marine processes that give us the majority of our air, the source of our weather, and the greatest diversity of life on the planet. But it is a fabric that is being torn to shreds through our historically misplaced belief that the ocean is ours for the taking.

Earle takes you through the current state of the ocean step by step. First, she examines the taking of ocean wildlife, from mammals to fish to shellfish, and our belief in the ocean’s limitless bounty as personified in the concept of Maximum Sustainable Yield (MSY) – which drove much of our fishery management policies since the 1930s by assuming that a sealife population, when heavily fished, will respond with maximum reproductive efficiency, thereby producing a surplus that will sustain the population. Great plan, but no one remembered to tell the fish, and so, by the mid-70’s, MSY was unsustainable as were many commercial fisheries as a result.

From there the book takes the reader through the other major issues threatening the seas today. Plastics and their consequences on sealife and fundamental chemical processes in the ocean; the loss of biodiversity – from minute phytoplankton to some of the ocean’s largest animals; drilling, mining, and shipping; and the controversial topic of today: climate change.

“It has taken about four billion years for living systems, mostly in the sea, to transform the lifeless ingredients of early Earth into the Eden that makes our lives possible, and less than a century for us to destabilize those ancient rhythms. Present climate change policies focus on the atmosphere, largely neglecting the ocean, despite ample evidence that the ocean drives and regulates planetary climate, weather, temperature, and chemistry.”

Policies. This is a key word as the book moves into an overview of the opportunities and solutions that can make a difference. Whether discussing the need for ocean exploration, reviewing the potentials and pitfalls of commercial aquaculture, or promoting the importance of Marine Protected Areas (a proven idea which currently only covers less than one percent of the total area of the sea), Earle’s experience in the federal and international arena comes through.

As a former chief scientist for the National Ocean and Atmospheric Administration (NOAA) and, currently, explorer-in-residence at the National Geographic Society, leader of the Sustainable Seas Expeditions, and active participant in a long list of policy-making organizations and marine think tanks, Earle brings a subtle political perspective that you do not find in many other books on the subject. Personal involvement is important and she has plenty of suggestions for each of us to consider. But the book is peppered with indications as to what is being done in the decision-making circles, which kept reminding me of the need for making our elected officials accountable.

“Knowing is the key to caring, and with caring there is hope that people will be motivated to take positive actions. They might not care even if they know, but they can’t care if they are unaware.”

The World Is Blue is an extremely accessible book, one that would provide a conservationist with logical arguments and reassurance while providing enlightenment and a new way of thinking for the yet unconverted. This is not a tome to doom and gloom. Yes, it pulls no punches and lays out the consequences if we choose not to act, but what makes this book an uplifting call to arms rather than a scolding is Earle’s enthusiasm and sense of wonder with the ocean. It’s obvious to the ear at her many speaking engagements and when I have been fortunate to chat with her one-on-one – and it comes through loud and clear in The World Is Blue. This is someone who truly loves the sea and loves life and knows how they are forever intertwined. A must read.

Richard Theiss
RTSea Productions
RTSea Blog: keeping an eye on Nature
Copyright 2009 RTSea

Filmmaker's Journal: summer sea ice above the Arctic Circle

I had the pleasure and thrill of traveling above the Arctic Circle to the area known as the Northwest Passage. Working for the research organization InMER, I was tasked with documenting evidence of climate change through interviews with Inuit indian tribal elders and government officials, in addition to capturing images of the flora and fauna.

Flying from one location to another, we came across a vast field of sea ice - the very stuff that provides a floating base for animals like polar bears, penguins, and even seals. My first impression was that the ice was solid and impenetrable. But soon I could see that it was like a vast expanse of shattered glass.

At that very same moment, we learned that the summer ice levels had reached their lowest in recorded history. This made for a very sobering moment. Here I was, looking down on clear cut evidence of climate change, on a landscape as fragile as any you could imagine. With the loss of more and more sea ice, the opening of the Northwest Passage to commercial shipping traffic becomes an increasing reality. That spells serious environmental concerns for the region, not to mention what it says about the worldwide impact of climate change.

Here is a video that I put together for InMER that has been included in the new ocean layer of Google Earth (courtesy of InMER.org). Check it out and check out the new Google Earth!



Some of the footage I shot for InMER was also used in a segment of National Geographic Wild Chronicles series on PBS. The more that people learn about what is happening to our climate, hopefully the more we can do to improve the situation.

Moray Eels: feeding science fiction-style

For those of you who don't read National Geographic, here's an interesting "fun fact" from the latest March issue. . . You think the slimy villain from the Alien movies is the only creature with a second set of jaws? Well, how about the Moray Eel?

Many divers are familiar with the moray's threatening display of sharp teeth - a pose that comes about from the eel's breathing, as it doesn't have large flapping gill structures like bony fishes - and that these rear-facing teeth are designed to hold fast to its prey. But did you know that it has a second set of jaws that spring forward and assist in pulling the prey down its esophagus? This all takes place deep in the eel's throat and though it seems like something right out of a sci-fi thriller, it's actually a very efficient method of food transport for an animal that doesn't have the ability to gulp food down - like the vacuum motion you see with many other fish.

National Geographic reported that researchers from the University of California at Davis have studied this ability using x-ray and high-speed video (see photo) and it is apparently the first known mechanism of its kind in a vertebrate. Snakes get close, with hinged jaws that can slowly ratchet their prey down the gullet, and it's an example of evolutionary convergence - the development of a similar solution between animals facing the same problem.

As a volunteer diver at the Aquarium of the Pacific, me and my fellow team mates would feed the aquarium's eels and watch how they would grab a large sardine or squid perpendicular, turn it towards their throat and then down it would go without any help from the front teeth. A second set of jaws . . . who knew? Well, obviously somebody in Hollywood did!

Article also on online National Geographic.

Dr. Sylvia Earle: inspiring ocean explorer and advocate

I recently had the opportunity to meet and spend some time speaking with Dr. Sylvia Earle, world renowned oceanographer and a leading advocate for marine conservation. Currently, an explorer in residence with the National Geographic Society, Dr. Earle carries a distinguished list of aquatic accomplishments to her credit. Here are just a few:

• She began her oceanic studies with botany, ultimately writing one of the definitive dissertations on aquatic plant life.
• While men walked the moon, Dr. Earle led an all-women expedition team aboard Tektite II, an undersea research platform, spending two-weeks at 50 feet underwater off the Virgin Islands.
• In 1979, she set a depth record for an untethered dive of 1,250 feet wearing the Jim Suit, a pressurized deep sea suit. Brought to the bottom sea floor off Oahu by the submersible Alvin, her 2-hour excursion remains a record unbroken to this day.
• Started several companies responsible for the design and development of some of the world's most advanced deep sea submersibles used throughout the world.
• A prodigious author of books on ocean exploration and a producer of documentaries with recognized filmmakers like Al Giddings.
• In the 90's, was chief scientist for NOAA, the National Oceanic and Atmospheric Administration.

Currently, Dr. Earle is the driving scientific force behind the latest version of Google Earth which now includes the oceans. And, with co-author Linda Glover, she has just completed an updated Ocean Atlas for National Geographic Publications, available in bookstores now. Like an aquatic Everyready bunny, she just keeps on going.

It was an obvious honor to meet such an accomplished individual, but what struck me most was her enthusiastic support for anyone doing anything to advance the cause of ocean education and enlightenment. My efforts to date regarding shark conservation or working with groups like InMER on climate change issues are small potatoes compared to what she has done, but you would never think it while you're in her presence. She wouldn't let you think it, encouraging you instead and egging you on to "get it done." A true inspirer comes not from what they have done, but from how they make you feel about what you can get done.

I have had the opportunity to meet several celebrities and accomplished individuals throughout my career. Some have been polite but curt, some have been major disappointments, and some have been people like Sylvia Earle - who make us feel good about our hopes and our dreams for a healthier ocean, a healthier planet.