Poseidonians

Poseidonians are a fictional nationality, sometimes identified as a race, featured in comic books published by DC Comics. They are associated with the Aquaman line of titles. Poseidonians are Atlanteans who hail from the capital city of Poseidonis.

The Poseidonians make up the majority of all Atlanteans and reside in the city-state of Poseidonis. Pre-cataclysmic Atlanteans were essentially human, but following the Great Deluge, they were forced to adapt to living beneath the sea. A special serum gave them amphibious characteristics, but after only a few short years, these Poseidonians lost their ability to process oxygen through normal means. They evolved into a race of completely aquatic people and remain so to this day. A Poseidonian (and most other Atlanteans) can only survive out of the water for up to one hour before they must replenish themselves in the sea.

Poseidonians have small fins on the back of the calves; Purple eyes denotes magical potential