"Creature Feature" and "The Creepy Cruise"
Creature Feature
The gang head out to the drive-in for a fun night but find that the place is haunted by the Tooma, an old monster from a Hollywood movie. The gang investigates the drive-in to find that the ghost is not real as they interview the old movie producer who held on to the costume from the movie, but its gone. The gang set a trap and catch Tooma only to find out that it is the drive-in owner's brother-in-law.
The Creepy Cruise
The gang are heading out to sea to study a pollution problem as they are joined by a Senator and an old "sea dog". The ghost haunts the ship of the famous sea explorer Captain Justseau as the gang sets the trap to capture the ghost. But it's Scooby who accidentally trips up the ghost. Unmasking the ghost, the gang learns it is the Senator who has ties to the corporation polluting the sea. It appears the Senator was trying to hide his involvement in the affair.