Atlanteans/Homo mermani (Marvel)
- Amphibian Effect
- Underwater Breathing
The user can breathe in both water and air and are capable of staying underwater as long as they like and reemerge ready to breathe oxygen again.
- May have complications when transitioning from water to air.
- Chemicals/pollutants in water may damage lungs.
- May have a limited amount of time they can respirate air or water.