Gold Shell
- “If you bring me the gold shell, it's an automatic A for you!”
- —Coach, Super Mario Galaxy
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A Gold Shell is a very rare type of Koopa Shell, that seems to be so rare it only appears in two galaxies of Super Mario Galaxy. It only appears in the levels "Passing the Swim Test" and "Bigmouth's Gold Bait".
When the player arrives at the Beach Bowl Galaxy, he learns that the penguin's Coach gave his students a "Swimming Test" where the students have to find shells. He states that the penguin that finds a Gold Shell instantly gets an "A" score. When the player dives underwater, he sees that a penguin has already found a Golden Koopa Shell and it is also the last and only one there is. The player later swims up to the penguin who says that he won't give him the shell. However, the player can take the golden Koopa Shell from him by spinning and can take it back to Coach, who is so impressed that he gives Mario a "gold medal" (which is actually a Power Star). Coach later realizes that Mario is not a penguin and starts wondering if Mario really is one of his students. After Mario gets the Power Star, he will have to leave the golden Koopa Shell behind.
In the Bigmouth Galaxy, the player finds a golden treasure chest that will only open if he brings back a Gold Shell. After swimming through a dangerous cavern in the darkness, the player must find the shell to bring back up, where it opens the chest, letting the Captain of the Toad Brigade free. He gives Mario a power star for freeing him.
