Poliwag is an amphibian Pokémon that looks like a blue, round tadpole. It has big eyes and pink lips which also function as suction cups for gripping rocks. Its skin is thin yet flexible and hard to puncture. A black and white spiral on its belly represents its internal organs visible through its semi-transparent skin. This spiral becomes more apparent after eating and may have a white hue if the Pokémon is ill. The direction of this spiral varies by region, possibly influenced by proximity to the equator.
Poliwag has recently developed legs that are not good for walking and lacks arms. It has a long, slim tail encircled by a light-blue, semi-transparent fin, making it a strong swimmer. Despite the risks, it enjoys waddling on land but will swiftly retreat to water when threatened. Only with daily training can it manage to walk better on land.
Due to its clumsiness on land, Poliwag is typically found swimming in small freshwater ponds and lakes. In the anime, it feeds on salveyo weed, which grows only at the bottoms of clear lakes.
Evolution
Poliwag evolves into Poliwhirl, which can further evolve into either Poliwrath or Politoed.
(Source: Bulbapedia)
