The Adventures of Sharkboy and Lavagirl 3-D (2005)
The Adventures of Sharkboy and Lavagirl is a family movie produced by Robert Rodriguez. A school kid (Max) tells stories about his friend Sharkboy (a boy raised by sharks) and Lavagirl (a girl with lava skin), but nobody believes him, until the two take him to save their planet.
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Theatrical Trailer: