Instead of legs/rear legs, the mutant has a scaly fishlike tail. It also has gills as well as lungs and can breathe underwater. The mutant is able to swim using its full move, but M on land is reduced to 1. However, the mutant can cross bodies of water (such as moats, streams, rivers, and lakes) without penalty. The mutant's other characteristics are unaffected. Increase the mutant's fear points by one.