Aqua Mario

Aqua Mario (better known in PAL versions as Water Mario) is a form and special power up in the Super Mario Galaxy series. Mario transforms into this by getting a Aqua Mushroom.

Effect
Players can turn into puddles of water to avoid enemies, similar the Stone Tanooki Suit from Super Mario 3D Land. Once turned into a puddle, the Air Meter will appear, and if it runs out, Mario will suffocate, thus losing health, and eventually losing a life.

Trivia
Fantendo came up with the Aqua Form when seeing the color of Cosmic Mario and a real puddle.