The Snorks go on a snorking trip. Everyone is having the time of their lives, except Junior. Junior is all shook up after a story about a sea creature. While on a nature hike, they get lost thanks to Junior's ""sophisticated"" compass. While finding the way back, they come across an old sunken ship. As they explore the ship, they almost get caught by a strange giant form reaching into the ship. All-Star gets them all out safely, and he is commended for his efforts. The strange form just happened to be a diver just exploring under the sea.