![]() A sperm whale descends 1,000 metres to look for food and is followed.Over 60% of the sea is more than a mile deep and it forms the planet's most mysterious habitat. This episode was broadcast in the United States with the title "Ocean World".īroadcast 19 September 2001, the next programme explores the unknown depths of the ocean. George Fenton's work in this episode won another Emmy for "Outstanding Music Composition for a Series (Dramatic Underscore)". This episode won an Emmy Award for "Outstanding Cinematography for Non-Fiction Programming". ![]() A year and a half later the carcass is striped to the bone. Hagfish, a sleeper shark, and other scavengers arrive to feast on the carcass. Meanwhile another gray whale carcass has sunk to the bottom of the deep sea.Along the coast of California, a migrating gray whale and her calf are targeted by a pod of orcas, who hunt down and kill the calf.In addition, their eggs are nutrition for many, both above and in the sea. Herring initiate the most productive food chain, providing sustenance for humpback whales, and Steller's and California sea lions.Lunar phases can also have a bearing on events and the mass arrival of Ridley sea turtles on a Costa Rican beach is shown.Phytoplankton forms the basis of all sea life, and every night some 1,000 million tonnes of creatures ascend from the deep to search for food. ![]() These feeding grounds have led to the world's largest albatross breeding colony, on Steeple Jason Island, west of the Falklands.
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