DCMP members can access the full video for free here: https://www.dcmp.org/media/13802 - To find out if you qualify, visit https://dcmp.org/signup Host Steve Backshall examines what is by far the largest ecosystem on the planet: the deep sea. It contains some of the most extraordinary and bizarre life forms. There is even life on the deep seabed, where armies of sea urchins, giant wood louse, and deep sea crabs feed from a thick layer of sediment. Part of the "Nature's Microworlds" series.