Hostile Planet - Season 1 Episode 2

Dive beneath the surface of the Earth's vast oceans to uncover a world of extremes, from crushing depths to stormy coasts to crowded reefs. Oceans are dynamic environments where animals must adapt to life of constant change. Discover how seals fend off sharks, how turtles risk their lives to create their next generation and how ingenious orca fight to survive in the face of competition.