[STARWISE]

I've decided he's a barnacle ..

barnacle (bär'nə-kəl)

Pronunciation Key

Any of various small marine crustaceans of the subclass Cirripedia that form a hard shell in the adult stage and attach themselves to underwater surfaces, such as rocks, the bottoms of ships, and the skin of whales.

[Txsleuth]

Good call....Barnicle Goober.