Sperm Whales: Titans of the Deep

Sperm Whales: Titans of the Deep
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Summary

Documentary exploring the lives and activities of sperm whales, the world's largest predators, as they descend to depths of more than 1500 metres. The programme also draws attention to the main threats to these creatures' existence - humanity's search for oil in the North Sea, and the acoustic disturbance caused by an abundance of nuclear-powered submarines.
Nature