Bonefin Galaxy

The Bonefin Galaxy is a galaxy in Super Mario Galaxy. This galaxy, like the Drip Drop Galaxy, this planet is basically a large body of water with a solid core. Unlike the Drip Drop Galaxy, this galaxy has a large, spiky, shell. The core contains a star inside it. This galaxy is the home of Kingfin.

Kingfin's Fearsome Waters
In the first and only level the player must defeat Kingfin by throwing Koopa Shells at it, after 1 hit, Kingfin will start releasing robotic fish resembling Kingfin, once Kingfin is attacked 6 times, He will release a Power Star.