Gills

Character has a full set of gills, and accompanying organs (or modification to existing organs) letting them live under water, or on land (unless some other defect in the character would not permit this). The character may develop, or have webbing, or fins to assist in swimming. if the character is an aquatic type Mutant Animal (a Fish for example) they ignore this as a mutation, but instead treat it as an innate trait. Poison Gas automatically kills characters with this mutation if they are exposed to it for 20 seconds, or more. Gills are typically located on the neck, behind the ears, between the ribs, or even on the forearm.
Category:Gamma World
Category:Gamma World Mutations
Category:Gamma World Physical Mutations