Aquaman

Arthur Curry is the son of lighthouse keeper tom curry and the atlantean queen atlanna.

Growing up on land arthur always noticed that he was different from the other people being able to breath underwater. swim at superspeed and communicate with marine life.

As an adult arthur finds the lost city of atlantis where he meets and falls in love with the beautyfull mermaid Mera and discovers his royal herritage.

However he leaves the throne to his younger brother orm and returns to the surface to protect the sea from threat like pollution. global warming illegal fisheries and villianous people like black manta.