It's our green seas, not the blue, that bring life to our oceans. Here sunlight powers the growth of enchanted forests of kelp, mangroves and prairies of sea grass. They are the most abundant but fiercely competitive places in the ocean to live.

Originally released by BBC Worldwide Learning, 2017. Streaming video file encoded with permission for digital streaming by Infobase on April 20, 2018.

Spring Transformations (3:47); --Kelp Forest (5:38); -- North American Pacific Coast Kelp (6:33); -- Sea Otters (3:33); -- Seagrass (2:58); -- Spider Crabs (6:12); -- Southern Australia Seas (5:25); -- Weedy Seadragon (3:50); -- Mangrove Forest Nursery (6:31); -- Algal Bloom (5:30); -- Credits: Green Seas (0:32); .