Atlantis

Atlantis is a planet made entirely of water. It was named after the ancient lost city of Earth, and while it is a generally harmless planet, few ever seek to visit it. Atlantis is home to the Merfolk, and aside from the occasional space-sea creature sighting, they're the only ones capable of inhabitating the planet.

Facts about Atlantis

 * There are rumors that Atlantis was discovered and colonized by mutants who could survive in the waters.  However, this has never been proven and is often argued that it would be risky for mutants to procreate in this world, as it is unknown if their child will carry a mutated gene that will allow them to survive here as well.

Known Species

 * Merfolk
 * Mutants