Shows how scientists investigate the unusual forms of life living around hydrothermal vents in extremely deep areas of the oceans.

First dive to the abyss -- Understanding the deep sea -- Discovering life where life doesn't belong -- Mollusks on a fast track to survival -- Explorer of the deep -- Inside a volcanic eruption -- Yellow brick road --The rise of life in the deep sea -- Evolution of a full-blown community -- The year of the mussels -- New eyes on the deep ocean -- Unanswered questions.