When ordinary boy Marvin wears his super-suit he becomes MARV. A superhero with infinite powers . . .
Marvin and his friend Joe are at the brand-new super-spectacular waterpark - WAVE WORLD! But despite the excitement, Marv's reluctant to get in the water. Although Marv can swim, sometimes he gets struck by a fear of the water that he calls 'The Panic'. Marv uses excuse after excuse to stay out of the pool. Then someone shouts 'SHARK!' Shark!? It looks like a supervillain is up to mischief again. It's time for Marvin to become MARV. But, even as a hero, overcoming his fear of the water is going to be a challenge. Can Marv defeat supervillain Shadow and her army of robot sharks to save the day?

As part of the bestselling Marv series:
¿ Marv and the Mega Robot (ISBN: 9780192780423)
¿ Marv and the Dino Attack (ISBN: 9780192780447)
¿ Marv and the Pool of Peril (ISBN: 9780192780461)
¿ Marv and the Blizzard Zone (ISBN: 9780192780485)
¿ Marv and the Killer Plants (ISBN: 9780192780508)
¿ Marv and the Humongous Hamster (ISBN: 9780192780522)
¿ Marv and the Alien Invasion (ISBN: 9781382053853)
¿ Marv and the Duck of Doom (ISBN: 9781382053884)
¿ Marv and the Funfair Fright (ISBN: 9781382053914)