Famed underwater filmmaker Howard Hall guides this immersive adventure that lets you swim alongside some of the most exotic creatures of the planet. Johnny Depp and Kate Winslet narrate. And as unusual array of finned and scaled stars are ready to steal every scene. Green Seat Turtles gather off Kona so that reef fish can strip harmful algae from their shells. A predatory Humboldt Squid changes color four times per second like a flashing strobe light. An underdog Mantis Shrimp's claws have the speed of a .22 caliber bullet in battle against hungry octopus.