Poliwhirl

Poliwhirl (Japanese: ニョロゾ Nyorozo) is a Water-type Pokémon introduced in Generation I. It evolves from Poliwag starting at level 25. Poliwhirl can further evolve into Poliwrath when exposed to a Water Stone or Politoed when traded while holding a King's Rock. Poliwhirl is a blue, bipedal amphibian Pokémon with a spherical body. It has bulbous eyes that protrude from the top of its head. A black and white swirl covers its belly, which is actually its organs showing through its thin skin. It appears to have white gloves on its hands and rounded, digit-less feet. When out of water, Poliwhirl sweats to keep its skin moist. Its skin is covered in an oily fluid that allows it to slip away from enemies. All of its skin feels this way except for the swirl, which is very smooth. The swirl on its belly undulates slowly, and staring at it induces drowsiness. Although Poliwhirl can move on land, it prefers to stay in freshwater ponds and lakes, where it has fewer natural enemies. It feeds on both Bug and Fish Pokémon. While it will leave the water to capture Bug Pokémon, it will return and consume them underwater in safety. It also uses its swirl to make children fall asleep.