![Kate Nelligan](http://image.tmdb.org/t/p/w92/4GpQvniLNMKF19qtHMb0tBBgNce.jpg)
An underwater exploration beneath kelp forests in the Pacific Ocean off the coast of Southern California. The film captures the birth of a shark, squids mating, a lobster molting, a fish protecting its nest from an octopus and a sea urchin, and the sea bed covered with brittle stars.