The shark dad is the father of the shark son who makes his only appearance in the episode "Sportz?"
He is a gray shark with a beige shirt, brown pants and belt, and a green tie. He is also seen to be balding on the top of his head and has wrinkles.
When SpongeBob and Patrick are racing with ice skates on, the shark son asks if he can play as well. However, the shark dad says that they are sports fans and that they watch instead. The shark dad then pulls up a chair and the son puts on a foam hand, as they both watch SpongeBob and Patrick.