How does life survive in the deep ocean where conditions get hostile? Here, life becomes increasingly extreme.

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

Deep Ocean Exploration (4:36); --Pacific Ocean Twilight Zone (6:29); -- Pacific Ocean Midnight Zone (3:47); -- Marine Snow (4:54); -- Deep Sea Meal (7:14); -- Seafloor Oasis (5:58); -- Seafloor Eruptions and Lakes (5:26); -- Hostile Sea Environment (3:31); -- Mid-Ocean Ridge (8:18); -- Credits: The Deep (0:34); .