Sharks and CITES

Posted on By David Shiffman 1 Comment on Sharks and CITES
Conservation, Science

The  15th meeting of the Convention on the International Trade in Endangered Species of Wild Fauna and Flora, also known as CITES, has begun, and representatives of 175 countries are meeting in Doha, Qatar. CITES rules have the power to make international trade of plant and animal species illegal, which has enormous significance for their conservation. 8 shark species have been proposed for CITES protection under appendix II- oceanic whitetip sharks, porbeagle sharks, spiny dogfish (commonly used for fish and chips in the UK), dusky sharks, three species of hammerheads (great, smooth, and scalloped), and my study animal the sandbar shark.

Read More “Sharks and CITES” »

The Cove, Dolphins, and Mercury

Posted on By Amy Freitag 6 Comments on The Cove, Dolphins, and Mercury
Popular Culture, Science

thanks to www.savebay.info

The Cove has recently collected a long list of awards including most notably an Oscar for best documentary.  These well-deserved accolades reward the filmmakers for risky and groundbreaking filming in a highly protected cove in Japan where a dolphin fishery thrives, both to feed the aquarium trade and citizens wishing to enjoy a dolphin dinner.  However, I caution viewers, as with most works of art that rely heavily on scientific information, that you should use the movie as inspiration but turn to the scientific literature for accurate information, especially in terms of mercury concerns within the dolphins. Mercury poisoning is scary, but it is only one amongst a long and growing list of toxicological concern.  Its effects are relatively well-understood and known to be primarily of concern for pregnant women and small children.

Read More “The Cove, Dolphins, and Mercury” »

10 things I hate about sharks

Posted on By Andrew Thaler 7 Comments on 10 things I hate about sharks
Science

Although vertebrates, sharks have cartilaginous skeletons. Why can’t they make up their minds? Sharks don’t fly anymore. Seriously, there used to be flying sharks. Flying Sharks. You can’t make this stuff up. Shark fins have no flavor. None. I mean what’s the point? Dermatologists get confused. Teeth for skin? What’s up with that? Sharks aren’t … Read More “10 things I hate about sharks” »

Why sharks matter: a reply to “sharks are sub-par at best”

Posted on By David Shiffman 45 Comments on Why sharks matter: a reply to “sharks are sub-par at best”
Science

Recently, Andrew attempted to correct several commonly-held misconceptions about sharks. He raises some good points, but I disagree with his conclusions. I believe that sharks are incredible animals, but I think it is far more relevant that sharks are important animals.

Read More “Why sharks matter: a reply to “sharks are sub-par at best”” »

Sharks are sub-par, at best

Posted on By Andrew Thaler 15 Comments on Sharks are sub-par, at best
Science

In honor of the world premier of David Shiffman’s first major motion picture, “Four things everyone needs to know about sharks,” we are proud to repost our original response to the article, “Sharks are sub-par, at best.” Enjoy!

For too long have I sat idly by as my co-blogger has waxed poetic on the glories of sharks. How great they are as predators, how perfectly they’ve evolved. They’re ancient, pre-historic, haven’t changed in millions of years. They’re the ultimate predator, and champion in the ocean. Unchallenged, unmatched, awesome. A wonder of evolution.

It’s time to clear up some of those -other- myths about sharks.

The fearsome whorl-toothed shark
The fearsome whorl-toothed shark

1. Sharks are ancient creatures that have lived unchanged for millions of years.

While technically true that sub-class Elasmobranchii has been around for hundreds of millions of years, modern sharks are, well, modern. They’ve been evolving for exactly as much time as just about everything else currently alive. And they are far from unchanged. Modern sharks, though they may resemble some older models (just like modern lemurs resemble Ida), are much different beasts then their Silurian cousins. Ancient sharks occured in a diversity of forms, back when they actually dominated the ocean. These modern sharks are just the scruffy leftovers.

Read More “Sharks are sub-par, at best” »

Shark conservation news: Fisheries closures, fish and chips, and a new shark sanctuary

Posted on By David Shiffman
Conservation, Science

It has been an exciting week for shark conservation! We can only hope that this provides some momentum for CITES, which begins tomorrow. And now, for this week’s shark conservation news: The Indian Ocean Tuna Commission declared a ban on commercial landings of all thresher sharks (each of the three thresher shark species is considered … Read More “Shark conservation news: Fisheries closures, fish and chips, and a new shark sanctuary” »