The sea is a yet-to-be-explored territory. This book carefully and curiously raises the skin of the ocean to see what there is beneath it: a wonderful world in which everything fits, from the largest whale to the smallest bacteria. Aboard a Norwegian ship on an ocean survey, from the information gathered from a satellite to see the water from space or with the help of submarines and bathyscaphes to explore the greatest depths of the oceans, the author helps us understand life and the interaction of the ecosystems and the species of the sea, as well as the importance of forecasting climate change in order to conserve our most precious resource.