From the Super Mario Wiki
Water Shooters are a type of devices that appear in
Super Mario Galaxy. Despite their names, they are
nozzles that shoot bubbles, which Mario can get into one and float in the air in a period of time within the bubble, using them mainly to reach some inaccessible points. They first appear in
Honeyhive Galaxy.
[edit] Trivia
- Water Shooters look and shoot water similarly to the Squirt Nozzle used by F.L.U.D.D., the only difference being that Water Shooters are blue in color.
[edit] See Also
Fire Shooter