LEGO Atlantis: The Movie
LEGO Atlantis: The Movie is a half-hour long animated television film which aired as a special on Cartoon Network in January 2010. It is based on the LEGO Atlantis toy line. The film features a four-person crew searching the ocean for the mythical city of Atlantis.
When the crew is attacked by a giant shark (the toy line calls it the Guardian of the Deep), Lance tricks him into eating an air tank disguised to look like a diver which seconds later makes him inflate and float away.