First airing in 1999, this show features the fictitiius place "rock bottom".
Rock Bottom (SpongeBob SquarePants) "Rock Bottom" is the 34th episode of the first season of the American animated television series "SpongeBob SquarePants". It originally was produced in 1999 and aired on Nickelodeon in the United States on March 15, 2000. The series follows the adventures of the title character in the underwater city of Bikini Bottom. In the episode, SpongeBob becomes stranded in a abyssopelagic zone called Rock Bottom.
The Thirty-Fathom Grave "The Thirty Fathom Grave" is episode 104 of the American television anthology series "The Twilight Zone". It originally aired on January 10, 1963 on CBS. In this naval-themed episode, the crew of a Navy destroyer hear a mysterious rhythmic noise coming from a sunken submarine.