Ocean Autopsy: The Secret Story of Our Seas

BBC Four HD

12:20 AM to 1:55 AM

Tuesday 22 July

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Oceanographer Helen Czerski and zoologist George McGavin examine the health of the North Sea's ecosytem to reveal the startling changes the world's oceans are undergoing. They investigate the effects of high levels of life-threatening toxins on marine life, and the invisible plague of micro and nano plastics saturating the water, as well as a species of fungi that can potentially consume these microplastics. George also visits Utrecht University to see leading animal pathologist Lonneke Ijsseldijk perform a necropsy on a harbour porpoise to try to find out how and why it died