The video of the shark is cool, but to me it's just a video of a shark. But listen to the commentary and you realize that this is a big deal. Five or six meters long, a head a meter wide, something really interesting about its gill slits. I'm glad these guys are having so much fun!
This comes from Deep Sea News

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Comments
One thing I noticed was the short rostrum, a primitive trait among sharks. It looks a lot like a bull shark, but with a shorter rostrum, and a thicker body. I'm thinking a new species. Perhaps even a new genus and family.
Posted by: Alan Kellogg | February 8, 2008 3:24 AM
I'm thinking a new species. Perhaps even a new genus and family.
I'm no marine biologist, but from the comments at DSN, it's a 6-gilled shark. Not especially well-studied, as they're a deep-water species, but certainly not unknown to science. They're one of the oldest species of sharks still around.
Posted by: Dunc | February 8, 2008 6:22 AM