Spy Kids 2: The Island of the Lost Dreams

'Spy Kids 2: The Island of Lost Dreams' is a 2002 American spy action comedy adventure film and is the sequel to 2001's Spy Kids. In the movie, sibling duo Carmen and Juni Cortez must journey to a mysterious island to stop a mad scientist from enacting his schemes while also contending with another sibling spy team in the form of Gary and Gerti Giggles.

While investigating the Transmooker device near the mysterious island, Carmen and Juni's submarine ends up losing all power and crashes. Because of this, the two of them decide to escape from the submarine using the included Inflate-A-Suits, which are designed to keep their wearer afloat on the water. However, their suits end up overinflating as they surface, causing them to become stranded in the middle of the ocean while being completely immobile. Eventually, a two-headed sea serpent surfaces and bites a hole in the back of their suits, causing them to rocket towards the mysterious island. Later in the film, Gary and Gerti end up in the exact same situation.

During the filming of the scenes, the actors wore jumpsuits that could inflate similar to in the movie, with each pair taking turns wearing the inflated suits while filming their respective scenes. During the shot where the characters surface above the water, the crew created miniature models of them in the suits and filmed right up to where they spat out their rebreathers.