Triton in Wikipedia
Triton (Τρίτων, gen: Τρίτωνος) is a mythological Greek god,
the messenger of the sea. He is the son of Poseidon, god of
the sea, and Amphitrite, goddess of the sea, whose herald he
is. He is usually represented as a merman, having the upper
body of a human and the tail of a fish, "sea-hued", according
to Ovid "his shoulders barnacled with sea-shells"...