As the official captain of the Scarlet Squid, Captain Captain has made her own addition to the shipwreck - a shark tank. It is home to her two pet sharks, Ethel and Gertrude. Captain Captain instructs Cook and Line to brush her sharks' teeth, but they are scared of the sharks and do all they can to avoid brushing their teeth. Captain Captain insists that sharks are not scary, simply misunderstood, and she sings a song about how lovely sharks really are.