Aquaman: The Legend of Aquaman

Born as Orin to Queen Atlanna and the mysterious wizard Atlan in the Atlantean city of Poseidonis he was abandoned as a baby on Mercy Reef above sea level. To any other Atlantean, this would have been fatal but Orin survived and traveled the wilds of the ocean until he was found by a lighthouse keeper and renamed Arthur Curry. Arthur eventually returns home to become the ruler of all of Atlantis and the oceans beyond.