Oyster

Pearl Oysters are large, sinister-looking clams found in Donkey Kong 64.

Six Pearl Oysters can be found in a locked chest in the area Gloomy Galleon. In order to get inside this chest and reach the Pearl Oysters, Tiny Kong must shrink down in size using a Mini-Monkey Barrel and swim through the key hole on the chest's lock. Once inside, Tiny will find several Pearl Oysters opening and closing their mouths in a repetitive fashion; inside the mouth of each Pearl Oyster is a pearl.

Tiny must carefully swim inside a Pearl Oyster and grab the pearl within. Only the Pearl Oyster's teeth can injure the monkey. Once Tiny grabs all the pearls, she must return them to the Mermaid's seashell citadel where she can exchange them for a Golden Banana.