Rock Bottom

Rock Bottom is a SpongeBob SquarePants episode from season one. In this episode, SpongeBob gets stuck in Rock Bottom.

Plot
SpongeBob and Patrick board a bus to get home from Glove World, a glove-themed amusement park. They have apparently gotten on the wrong bus and head off a large cliff. The cliff leads to a sort of aphotic zone called Rock Bottom, inhabited by anglerfish-like creatures. Patrick gets on a bus home but accidentally leaves SpongeBob behind. After several unsuccessful attempts to get on the bus, he heads to the bus station and gets in a very long line. By the time he gets to the front, he finds out that the last bus to leave for the night is already gone, and he's stuck there until morning. He gets scared by a raspberry sound coming from nowhere, and he dashes back to the cliff. The raspberry sound's maker reveals himself to be a friendly-looking anglerfish creature, who has SpongeBob's balloon from Glove World. The creature blows up the balloon, ties it to SpongeBob's wrist, and allows him to float up the cliff and back to Bikini Bottom. Patrick is then shown going back to Rock Bottom for SpongeBob, thinking he is still there.