Shark-man

Sharkman fanart by Dagoth.

The eternal enemies of the merfolk are the far more savage shark-men, beastfolk who are the former shark Shifters. They still have the heads of sharks, yet they retain their human arms and legs in addition to their shark-like tail. This makes them deadly on both the land and sea, since, like merfolk, they can breathe in both environments, but the shark-men can also walk. Their favored weapon is still the spear, but their jaws give them another deadly edge. They rank high on a sailor's list of fears.