It's flat. It's slimy. And it hides under rocks on the river bottom. It's the Ozark hellbender, and at up to two feet in length, it's one of the world's largest salamanders.
But Ozark hellbenders are disappearing: Fewer than 600 are left in the rivers of southern Missouri and northern Arkansas. Scientists have been making a huge effort to get them to breed in captivity. And now, thanks to a major effort at the Saint Louis Zoo, 2012 could be the year of new hope for hellbenders.