A long, skinny shark that look like an eel, are among the oldest living species of sharks. Fossil evidence frilled sharks date to 95 million years ago. Some paleontologists suggest it is a living cladodont shark, a shark that existed as long ago as 380 million years. Frilled sharks have a long, thin body followed by a long tail fin. It has six gill slits which are covered with the frilly skin that gives it its name. Gestation is long, although it is not known how long, with estimates running from 1 to as long as 3.5 years!
A newly identified species is in waters around Africa.