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. This is the only bonus galaxy in the game where Mario must fight a boss.

Unlocking
This is the only galaxy within a dome in Super Mario Galaxy which requires a mission from outside a dome (Giant Eel Outbreak) to be completed to unlock it. This galaxy is also the dome-based galaxy which requires the most Power Stars to unlock. It needs 55 Power Stars, in comparison to the last galaxy to be unlocked in the Garden (Melty Molten Galaxy), which only requires 52 Power Stars.

Starshroom
When Mario first enters the galaxy, he will start out on a green Starshroom near the Kingfin Planet. This Starshroom is empty for unknown reasons, as there are no Toads found anywhere within the level. 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 Skeletal Fish Guards and attack Mario. After Kingfin is defeated, the Power Star appears.

Mission
This galaxy contains only the following mission.

Trivia

 * This galaxy features the exact same background as the Ghostly Galaxy and the Boo's Boneyard Galaxy, and uses the same music as Bouldergeist.

Schädelhai-Galaxie Galassia di Re Skelopesce