Nobody remembers this one exists, and that's the tragedy. A gag manga adaptation from 1994 where the entire movie is built around a shark that doesn't want to leave town, and somehow that's enough because Dr. Slump's comedy doesn't need stakes, just timing and a cast unhinged enough to treat a shark rescue like it's the most important crisis in the world. The humor lands on absurdity, not plot. If you've ever loved a comedy so silly it stops trying to be about anything and just is, this movie understands what you came for.
In the eighth Dr. Slump movie, Arale rescues a baby shark in trouble at the beach. Grateful for the save, the sharks extend an invitation to the Underwater Kingdom, welcoming Arale and her family to visit.