Vaporeon, known as the Bubble Jet Pokémon, is one of the evolutions of Eevee that is caused by radiation from a Water Stone. Vaporeon's body is light-blue and has a white collar; it has yellow ears made of webbing and a fin on its head resembling ears, and a pointed pattern of dark blue on its head that encompasses the backs of its ears and head-fin. It also has blue ridges that run down the length of its spine and on to its tail-fin, and the paw pads on its hind feet are dark blue, like the ridges. Vaporeon's molecular structure is close to water, and because of this, Vaporeon are highly adapted to aquatic life. It can manipulate water molecules, melt into water,  walk on water, and breathe underwater. Many people who first see this Pokémon believe it is a mermaid. When Vaporeon's fins begin to vibrate, it is said to be a sign that rain will come within a few hours. Vaporeon are always found close to water, and prefer large, clean lakes.