Smiling Coelacanth

Via the BB Submitterator, Marilyn Terrell tells us:

Everyone thought they died out in the Cretaceous era, but no. Rediscovered in 1938 by South African museum curator Marjorie Courtenay-Latimer who spotted this bizarro creature in an otherwise ordinary haul of fish, the coelacanth had been quietly minding its own business for millennia. They live so deep that they're rarely photographed alive. But in 2010, a specially trained team dived deep to photograph some in Sodwana Bay, South Africa for National Geographic.

Photo by Laurent Ballesta, and there's a larger gallery of images here.