The term 'A Sea God' can refer to several different gods from Greek and Roman mythology. NEPTUNE, with seven letters, is the god of the sea in Roman mythology. Nereus, with six letters, is a Greek god of the sea who was known for his wisdom and knowledge. TRITON, also with six letters, is a son of POSEIDON and Amphitrite and is known as the messenger of the sea. POSEIDON, with eight letters, is the Greek god of the sea, earthquakes, and horses. Lastly, Aegir, with five letters, is a Norse god of the sea who was known for hosting elaborate parties.