Who lives on the bottom of the sea? Right, SpongeBob SquarePants. But where does he actually live? Right, SpongeBob's house is a pineapple under the sea. The only living creatures in this house are SpongeBob and Gary. It even has its own story. It was revealed, that the fruit fell off a ship that was navigating the area and landed on Squidward's garden and that's how this house appeared. SpongeBob cursor pack with fanart Pineapple House pointer.