Bonefin Galaxy

The Bonefin Galaxy is a galaxy in Super Mario Galaxy. This galaxy, like the Drip Drop Galaxy, is basically a large body of water with a solid core. However, unlike the Drip Drop Galaxy, this galaxy has a large, spiky shell shielding most of it. This galaxy is home to Kingfin, a gigantic skeletal shark that Mario must defeat to earn a Power Star.

To unlock this Galaxy, the player must have at least 55 Power Stars and have the Giant Eel Outbreak mission from the Drip Drop Galaxy completed.

Starshroom
When Mario first enters the galaxy, he will start out on a green Starshroom near the Kingfin Planet. There are several Star Bits on its underside and a Launch Star on the top of it will take Mario to the Kingfin Planet.

Kingfin's Planet
When Mario lands on this planet, Kingfin will appear along with Fish Bones and attack Mario. After Kingfin is deafeated, the Power Star appears.

Mission
This galaxy contains only the following mission.

Trivia

 * The Bonefin Galaxy is the only bonus galaxy in Super Mario Galaxy in which Mario must fight a boss.
 * The Bonefin Galaxy is the only galaxy within a dome that must have a mission from outside of the domes to unlock.
 * This galaxy features the exact same background as the Ghostly Galaxy and the Boo's Boneyard Galaxy.
 * For unknown reasons, the Starshroom at the beginning of the level is empty, and no Toads are found in this galaxy.

Galassia di Re Skelopesce