Mudkip - Hoenn

Mudkip is a Water-type Pokémon.
It evolves into Marshtomp starting at level 16, who evolves into Swampert starting at level 36.
Mudkip are small, blue, amphibious Pokémon with large heads, wide mouths, and orange, star-shaped external gills on their cheeks. They also have a fin on the top of their heads and a light-blue fin for a tail. They move around on all four legs, and have a light-blue underside.
Mudkip can use the fin on their heads to detect subtle changes in air and water currents, and can detect nearby bodies of water in this way. They can also detect danger. Like most Water-type Pokémon, Mudkip can shoot water from their mouths. When in water, Mudkip breathe using the gills on their cheeks. On land, they can powerfully lift large boulders by planting their four feet and heaving. If they are faced with a tight situation in battle, Mudkip will become strong enough to crush rocks bigger than themselves.
Mudkip are more mellow than their evolutions, but are protective of their kind and because of their powerful strength they group up in numbers and easily overpower their foes. They have been known to be playful, especially in mud, as well. They sleep by burying themselves in soil at the water's edge. Their large tail fin propels them through water with powerful acceleration.
Mudkip and members of its evolution family dwell in swamps or other wetlands, deep inside isolated islands, because of their dislike of fresh water lakes and ponds. Soon after birth on beautiful beaches, they swim to swamps deep within islands. Very few have been known to hatch in swamps.