Cephaloshark

Cephalosharks were a species of predatory native to Neroth.

Characteristics
Cephalosharks were blue-grey medium sized animals, being dark blue on top and lighter grey on the underside. They had a pair of long pectoral fins, a single dorsal fin, and a tail with a pair of caudal fins. Their heads resemble certain kinds of whales, with six "flaps" tapering to a point. These flaps give way and splay open once the shark extends its jaws, in actuality being a ferocious black beak in the center of four fleshy tentacles. The sharks use these tentacles to quickly snatch prey out of the water and pull it into its mouth.

They were notably aggressive, periodically attacking swimmers and divers.