Moby Dick and the Mighty Mightor

The Shark Men [Moby Dick] (1x20)

Air date: Oct 21, 1967

Tom and Tubb have been captured by the evil Shark Men with Moby and Scooby in pursuit. The Shark Men trap Moby in a cave. Moby manages to escape from the cave and now must set out in an effort to save the two boys.