Spongebob Season 1 : Squidward the Unfriendly Ghost

SpongeBob and Patrick think they have killed Squidward because they find a shell loged in the head of a wax replica of him. When the real Squidward appears, he is covered in powder, causing SpongeBob and Patrick to think he is a ghost. Squidward makes them do everything he tells them to his biding so that he won't "haunt" them. SpongeBob wishes to put Squidward's ghost to rest after reading a book about the Flying Dutchman. He blows a bubble, engulfing Squidward and sending him to dry land.