The has a large mouth with 25 rows of 300 sharp teeth, six pairs of fringed gill slits, and a long, eel-like body that can grow up to 6 feet long. It's referred to as a "living fossil" because it's a member of one of the oldest living shark species.
Promachoteuthis sulcus, a bizarre creature. As you can see, this thing has human looking teeth. It’s a species of promachoteuthid squid and only one specimen has been found to date. It was captured in the Southern Atlantic Ocean at a depth of