Poseidon on a hippocampus with trident 36cm

Poseidon:  was one of the Twelve Olympians in ancient Greek religion and myth, god of the sea, storms, earthquakes and horses. In pre-Olympian Bronze Age Greece, he was venerated as a chief deity at Pylos and Thebes. His Roman equivalent is Neptune.

Hippocampus:  often called a sea-horsein English, is a mythological creature shared by Phoenician,Etruscan, Pictish, Roman and Greek mythology, though its name has a Greek origin. The hippocampus has typically been depicted as having the upper body of a horse with the lower body of a fish.