Sandy Cheeks of SpongeBob SquarePants (voiced by Carolyn Lawrence) is a squirrel from Texas.
She has a number of athletic interests, such as "sand-boarding" and karate, and is a rodeo champion. She also works as a scientist, explorer, and inventor. Being from the surface, she lives in a tree which is inside a glass dome so she can breathe. To survive underwater, she wears a diving suit and helmet to travel outside of her tree-dome. Whenever any aquatic creatures enter her air-filled dome, they must wear helmets filled with water to breathe.