Scooby-Doo! Mystery Incorporated - Season 1 Episode 4 Revenge of the Man Crab The most hauntedest place on Earth.
Overview: A Man Crab attacks Crystal Cove beach during a volleyball tournament for Trickell's Triquid diet mixture. The gang must stop him and solve this mystery before the tournament's female players, who the Man Crab has taken a liking to, are put in danger. Meanwhile, Velma gets some relationship advice from Daphne.