Posieden's arch enimy is Athena godess of wisdon and war.
Poseidon? Do you mean the Ancient Greek god of the Sea? That's the only Poseidon I know of.
Poseidon is the god of the sea. He has control over the oceans, the sea creatures and sailor's voyages.
Poseidon's duties are to protect all aquatic creatures, the seas, and to protect his family (An educated guess)
Poseidon School was created in 1971.
Poseidon's Gold was created in 1993.
In the Wake of Poseidon was created on -19-04-01.
Rhea and Cronus made poseidon.
poseidons pet was a very rare animal called the crocabearmoose
The Creatures was created in 1981.
"Brilliant Creatures" was created in 2014.
Beyond the Poseidon Adventure was created on 1979-05-18.