Vaporeon is a Water-type Pokémon introduced in Generation I.
It evolves from Eevee when exposed to a Water Stone. It is one of Eevee's final forms.
Vaporeon is mostly found in urban settings under the ownership of a Trainer. It is rarely seen in the wild, but it prefers clean freshwater lakes. It has developed gills to become better suited to an aquatic lifestyle, and its cell composition's similarity to water allows it to melt into the water. This ability enables Vaporeon to remain camouflaged while swimming and ambush its prey: fish Pokémon.