Shellbeard, or Captain Shellbeard in full, is a sea turtle who appears in the real life Pick Your Path Book, Stowaway! Adventures at Sea. His role in the book varies between two major paths: in one, he is a famed pirate who attempts to steal Rockhopper's treasure. In another, he is an unnamed turtle who is one of many "audience members" on an island of turtles that think life is a game show.