|
June 12, 2008
Posted: 09:22 AM ET
Fire retardants in deep sea squids? Marine scientists now have evidence that a whole range of chemical contaminants have found their way to the deepest and most remote parts of the ocean.
The cockatoo squid is one species impacted by contamination. It’s found in deep waters off New England. Photo by Michael Vecchione, NOAA “Most people think the deep sea is so far away that humans don’t affect it,” said Michael Vecchione, a cephalopod biologist at NOAA Fisheries’ National Systematics Laboratory. Cephalopods include octopods, squids, cuttlefishes and nautiluses. The toxic chemicals that Vecchione and colleagues from the Virginia Institute of Marine Science found are a rogues gallery of scary initials: PCBs, TBTs, BDEs, and DDT* among them. Scientists classify all of them as POPs, or persistent organic pollutants. It means they don’t break down, and stay in the environment… pretty much forever. It’s not yet clear what level of these chemicals could harm or kill these deep sea creatures. “Some of them had surprisingly high levels,” said Vecchione. And because these marine animals are, ok, odd in their physical structure, Vecchione said they simply don’t have the ability to get rid of the chemicals once they are inside their bodies. One reason for the study was to find out more about how these contaminants go up and down the food chain. Deep sea squids and octopods are the main food source for some of the most iconic marine mammals: beaked, sperm, killer, and beluga whales; narwhals, dolphins and porpoises. Other marine scientists have found these POP chemicals in the blubber and tissue of both whales and fish. From the NOAA ship Delaware II the researchers used nets to collect animals from depths of 3,300-6,600 feet. The researchers analyzed 22 specimens collected in an area of the Atlantic Ocean called Bear Sea Mount, off the coast of New England. “Contamination of the deep sea food web is happening, and it is a real concern,” said Vecchione. Vecchione has also conducted Arctic and Antarctic marine biology research. So how did he get into the octopus and squid world? “They’re weird. The environment is alien. It is so different from what we are used to, I find it personally fascinating,” said Vecchione. His study will be published in the journal Marine Pollution Bulletin. *You knew there was going to be a test: Marsha Walton, CNN science and technology producer Filed under: Animals Environment
|
As we reach out to learn more about the universe, we're all coming to terms with our relationship to our home planet: Pollution, solutions, and challenges in the way we live - and what we may leave behind. New Gadgets, and new discoveries, from the lab to the edges of the Galaxy; and the crossroad where science, religion, money and politics collide. Miles O'Brien and CNN's Sci-Tech team debrief, decode, and occasionally debunk the torrent of news about our earth, space, and cyberspace. Recent Posts
Related Links
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
CNN Comment Policy: CNN encourages you to add a comment to this discussion. You may not post any unlawful, threatening, libelous, defamatory, obscene, pornographic or other material that would violate the law. Please note that CNN makes reasonable efforts to review all comments prior to posting and CNN may edit comments for clarity or to keep out questionable or off-topic material. All comments should be relevant to the post and remain respectful of other authors and commenters. By submitting your comment, you hereby give CNN the right, but not the obligation, to post, air, edit, exhibit, telecast, cablecast, webcast, re-use, publish, reproduce, use, license, print, distribute or otherwise use your comment(s) and accompanying personal identifying information via all forms of media now known or hereafter devised, worldwide, in perpetuity. CNN Privacy Statement.
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||