This Danish animation is a pleasant surprise, with an impressive visual sense to go along with it's eco-friendly story. Three children are turned into a cod, a starfish and a jellyfish after drinking a serum concocted by a mad scientist, who is trying to help humans to breathe underwater in advance of the impending deluge caused by global warning. While trying to find a way to turn back, the trio stumble on a plot by a scheming pilotfish to take over the world with an army of mutant crabs. Among the vocal talents on display are Alan Rickman and former Monty Python mainstay Terry Jones.