Canadian Fur Seals: lack of winter sea ice magnifies impact of annual hunt

The annual Canadian fur seal hunt has been a hot button issue with most animal conservation groups. With a slow but growing anti-fur movement, there has been pressure placed on the Canadian government to terminate the hunts, but the government has resisted and remained in favor of the industry that the hunts support (many of the hunters are actually fishermen, participating when seasonal weather curtails their fishing activities).

This year, there has been an new wrinkle that poses an additional threat to the seals: a lack of winter sea ice. Normally, there is substantial sea ice that forms in the Gulf of St, Lawrence and this ice layer provides a critical platform for fur seal birthing grounds. (To watch a video, click on the image above, then click on the web site's video link when the picture of a seal appears.)

According to the Humane Society of the United States, " This year, Environment Canada [a government agency] says we are witnessing the worst ice in history off Canada’s east coast. For the first year on record, virtually no sea ice has formed in key seal birthing areas. The impact on seals will be devastating. Many mother seals are likely to abort in the water, and unprecedented numbers of pups will die."

Whether this loss of sea ice is a statistical anomoly or the result of climate change is difficult to determine. On the one hand, there is documented evidence of declining sea ice throughout the Arctic region extending over a marked period of years. However, looking at a graph of February winter ice for eastern Canada shows fluctuations dating back to 1969.

There was a growing decline starting in 1995, but there were marked increases in the later part of this first decade of 2000 until this year, when it plummeted, reaching an all-time low.

In any case, the lack of sea ice will definitely have an impact on the fur seal population due to the loss of seal pups unable to survive at sea. The Canadian Press reports, "A marine mammal specialist for the Department of Fisheries and Oceans recently told The Canadian Press he also expects the death rate for seal pups to rise this year from its average of 15 per cent."

The Humane Society, which has always opposed the fur seal hunts, is stepping up their campaign to get the Canadian government to halt the impending hunts if, for no reason at all, but for the additional pressure it will place on fur seal populations already faced with higher mortality due to this unusual loss of winter sea ice.

Here's a video on the challenges facing Arctic sea ice that I assembled for Google Earth and InMER, a marine research and education organization.



Click here to read a current Humane Society press release on the issue.
Click here to learn more about the Humane Society's anti-seal hunt campaign.

Canadian Seal Hunt: economic pressure through boycotts and bans

The Canadian baby fur seal hunt has, unfortunately, been taking place in the winter and early spring for many years. Even after extreme efforts over the years from Greenpeace and other hard core conservation groups, the Canadian government has continued to support the fishermen who participate in this hunt during their fishing off-season. For many people, it becomes one of those sad conservation issues whose persistence eventually makes it a lower priority; nothing has changed so we'd rather not think about it. But maybe that's now turning around.

Following on the heels of the European Union's recent decision to ban the commercial trade in seal fur (the U.S. initiated such a ban in the early 70's), The Humane Society International is continuing the strategy of economic pressure by promoting an ongoing ban, extending it to Europe, of Canadian seafood products - products that generate much greater income for Canada and the fishermen involved in the hunt than do seal fur.

The images of big-eyed baby harp seals and hunters wielding clubs or picks has always added to the message that the hunt was cruel in it's execution. Seals could be shot, but bullet holes reduce the value of the seal skin, so clubbing remains the preferred method. Often, the seals are skinned while out on the ice, so in the end it's a pretty grizzly scene (although, I think if we spent a day at a slaughter house or chicken farm, we'd probably all be vegetarians). In the end, the question is whether the seal fur market is worth sustaining, given a shrinking customer base (Canada exports most of its seal product), ecological and conservation implications (Grey seals were nearly wiped out due to over-hunting in the Gulf of St. Lawrence), and the anticipated bad PR and loss of revenue from an extended seafood boycott.

Several commercial food markets and restaurants have joined the Canadian seafood boycott, including Whole Foods Markets, Trader Joe's Food Emporiums, and Jimmy Buffet's Margaritaville Cafes.

According to The Humane Society International:

"With more than 1 million baby seals killed in the past five years alone, Canada's commercial seal kill is the largest slaughter of marine mammals on Earth. The annual slaughter is an off-season activity conducted by commercial fishermen from Canada's East Coast who earn, on average, just a small fraction of their annual income from killing seals.

'Expanding the boycott of Canadian seafood to Europe is a logical next step in our campaign to end Canada's commercial seal slaughter,' said Mark Glover, director of HSI/UK. 'The European Union took the historic step of banning its trade in products of commercial seal hunts. Now, by not purchasing Canadian seafood products, European citizens are showing their support for putting an end to the bloody slaughter of baby seals.'

HSI's American partner, The Humane Society of the United States, launched the Canadian seafood boycott in the U.S. in 2005. To date, the ProtectSeals boycott has gained the support of more than 5,500 establishments and 650,000 individuals. With the help of European establishments, HSI hopes to increase these numbers—as the European Union is the third largest market for Canadian seafood—and bring an end to the inhumane slaughter of innocent seals."

Once again, it would seem that economic power speaks louder than humane actions when it comes to motivating commerce. If you would like to learn more about the hunt, click here. To add your name to the boycott list, click here.

White Sharks at Cape Cod: keeping the news in perspective

It was about a week ago that several shark blog sites, like SharkDiver's, started to post news about a congregation of white sharks appearing off Cape Cod in the northeastern U.S. While white sharks are not unheard of in this area, the higher than usual numbers were of interest - a statistical anomaly or evidence of a population increase (wouldn't that be nice, given their decline in numbers over the years)?

Scientists want to tag as many sharks as possible with satellite tags to hopefully accumulate data that might explain the concentration. And of course the media wanted to report this as another harrowing intrusion of malevolent ocean predators upon society. This morning, NBC's Today show reported on the efforts of the lead researcher and while their reporting was fairly even-handed (better than it has been in the past when it comes to sharks), they still referred to the scientist as a "shark hunter" rather than shark researcher or tracker. It's subtle but the title still invokes a man vs. man-eater image.

This past Wednesday, the Boston Globe reported that the spotter pilot who was assisting the researchers in locating and tracking the sharks claimed that several sharks made distinct threatening movements when a diver or surfer entered the water, as if to imply that the sharks were on the hunt for humans and as soon as a person entered the water the shark suddenly knew exactly where to go and what it would find. Here's a portion:

“They definitely knew they were out there,” Breen [the pilot] said of sharks sensing the swimmers. “Whether they’d bite them, I don’t know.”

Breen was hired to help the research team, which tagged three great whites on Tuesday, bringing to five the number of sharks tagged with tracking devices over the last week. The discovery of sharks off Chatham forced the indefinite closing of the town’s beaches, but some ignored warnings not to swim in the area.

In one near-miss, Breen said he watched as a shark approached a diver from a documentary crew making a film about the researchers. He said he was circling above the filmmakers’ boat when the diver jumped into the water to retrieve a piece of equipment.

“I saw a shark going real slow about a quarter-mile away, and then when the diver jumped in, all of a sudden I saw the shark head right for the boat, going from about 2 knots to 10 to 15 knots, in an instant,” Breen said.

He radioed the crew on the boat and told them to get the diver out -- right away. The diver was attached to a tether and he was pulled out.

“The shark definitely smelled something,” Breen said. “Their sensory perception is unbelievable. The shark was only about 100 feet when they pulled the diver out.”

I know, for those of you who know anything about sharks, you're doing a slow burn right now. Sharks don't "smell" people in the water, particularly at a quarter-mile away! A white shark has pretty good eyesight, but not that good. No, it's the shark's ability to "hear" or sense vibrations in the water (a trait shared by nearly all fish) that caught its attention as the diver jumped into the water. And these animals are naturally curious. I have been fortunate to have several close encounters with white sharks and these events came about not because I was the meal d'jour but because my presence peaked its curiosity; I was something out of the norm.

Sharks like the great white have a battery of sensory capabilities that, based on distance (far away to close) typically react in this order: vibrations/sound (lateral line and inner ear); smell; eyesight; electrical impulses (Ampullae de Lorenzini); and finally, taste.

If Breen had spoken with the research team who hired him before speaking with the press, he would have been set right and his sensationalistic story could have been diffused. But if you're looking for a hot story or a little attention, what good is that, eh?

Some of the beaches in the area have been closed which, dramatic as that may seem, might be prudent for a short while. The sharks are in an area with a seasonal breeding population of seals, which is probably what has attracted them. That there might be a slight uptick in the highly remote possibility wherein a swimmer could accidentally be mistaken for a seal - particularly if the swimmer is wearing a black wetsuit - may be sufficient reason to close a beach temporarily.

But let's hope that it doesn't inspire sportfishermen or even government officials to go on some wild hunting safari to clear the area of an animal who has more right to be there than we certainly do.

Domoic Acid: ocean toxins generated from several sources

The ocean is being bombarded from several directions and the effects can be not only predicted with computer models but can be seen right now first-hand. Some time ago I ran a post on the impact of domoic acid on wild life (and potentialy humans, too). Domoic acid is a toxin produced by phytoplankton algae and the issue presented in the post was that man's "treated" sewage waste products, pumped far off shore were, in essence, over-fertilizing the algae and thereby increasing the level of algae-based toxins.

We know about avoiding consuming shellfish during certain months due to annual concentrations of these and other shellfish toxins. And we avoid swimming in the ocean during periods of "red tides" when the phytoplankton population explodes. Unfortunately, sealife does not know or cannot avoid exposure and so there has been an increase in poisoned animals, in particular seals and sea lions which are susceptible to domoic acid's neurological effect..

Just this past weekend, a diver friend of mine opted for a hike at Palos Verdes peninsula in Southern California when dive conditions were not good. In just one hike around the point, he came across eight dead mature sea lions. All dead due to shellfish neuro-poisoning? Perhaps. in fact, based on reports from local marine mammal centers, very likely.

But treated sewage is not the only source of the problem. Algae can also be fed by the increasing levels of CO2. On the positive side, there are blueprints for algae-based alternative fuel plants to channel the greenhouse gases they produce during processing back into their algae crop. But outside of those controlled environments, in the open sky and open ocean, CO2 produces ocean acidification, which is gaining a lot of attention lately, and feeds the phytoplankton algae, adding to a vicious cycle.

Another example of the cascade effect of our actions, greenhouse gas emissions not only disrupt global temperatures and raise the ocean's ph level above acceptable limits, but also over-feed phytoplankton which impacts sealife and our commercial use of shellfish.

EU Bans Seal Products: a blow to the Canadian seal hunt

Back in March, I commented on the efforts of The Humane Society to generate public and political interest to curb Canada's annual harvest of fur seals. The latest word from the Humane Society is an encouraging one. The European Union (EU) has initiated a ban on seal products in specific response to a public outcry regarding the Canadian hunt.

It has been estimated that this ban cuts out as much as $6.6 million CAD of Canada's annual take of $7 million CAD. The ban has also driven down prices for seal products and of the annual quota of 280,000 seals, so far only 60,000 have been taken. However, The Humane Society will continue its efforts as the government-subsidized industry is not yet ready to admit defeat. But the EU ban is certainly a major blow.

One of the things I found interesting in this entire campaign was the strategy taken that has proved the most successful - that of developing a general public interest and consensus and applying political and economic pressure; forces that the seal industry fears the most. Extreme activism did not necessarily move the ball forward; it was the relentless pressure placed upon the traditional decision-making forces: politics and dollars. Currently, 60's-style activism and protests don't seem to be as effective as they once were. Getting endorsements from opinion makers ranging from Paul McCartney to the European Parliament's Swedish member, Carl Schlyter, and bringing their influence to bear behind the scenes with international decision-makers may not be very dramatic or "sexy" . . . but it appears to be working.

Sharks and Shellfish: a common thread

I was reading about two seemingly disparate animals: sharks and shellfish. And I came to realize there was a common thread to the life-threatening situations these animals are facing.

A recent report in the Norwegian scientific journal, Oikos, analyzed the impact on changes in seal predation behavior if the shark populations that preyed on the seals declined ("Do shark declines create fear-released systems?"). Pretty heady stuff, but through the researchers' computer models it was theorized that there could be major shifts in diets from shallower prey like herring to deeper water prey like pollock - where local sharks frequent, when the decline in shark populations has removed an element of fear that dictates a good measure of the seal's hunting behavior. Bottom line was that a decline in shark populations could produce a more significant change in the predator-prey hierarchy relationship than previously thought.

With shellfish, scientists are seeing an impact of warmer waters on various species that is producing population declines from deadly bacteria, among other factors. Oyster beds along the west coast of the U.S. are now seeing the effect (read recent article). The east coast has seen this effect, too. A platter full of shucked oysters may not be your cup of tea (it's not mine), but as filter feeders, shellfish play a critical role in maintaining water quality. When shellfish populations whither, bacteria and various types of algae explode and push out a wide range of sealife through water degradation and loss of habitat.

So, what's the connection? One is that both of these situations represent the domino effect that occurs within any complex marine eco-system. For every action, there is a reaction - sometimes a very severe or unexpected one. Another connection is that these are basically man-made problems - over-fishing and global warming - and will have an effect on commercial operations that involve these animals. So our actions come back to haunt us.

Certain marine issues can gain more traction and get more media attention or public sympathy and support. But in the end, we need to consider the overall complexity of this ecological jigsaw puzzle we call the oceans and give every issue its due.