The Sea Lion
From the Monster Manual: " A Sea Lion is a fearsome aquatic creature with the head and fore-paws of a lion and the body and tail of a fish."
The Sea Lion is nothing special in terms of combat, with a 1d6+4 claw attack and a 1d8+2 bite attack combined with the rend ability they are pretty standard fair as far as monster attacks go. There are no breath abilities, no level drains, and no spell-like abilities, just claws and teeth. The artwork and the glaring pun alone are enough to make the Sea Lion one of my favorite D&D monsters and for those reasons I have chosen it as my first monster for my Creature Feature.
