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Prof Ben Garrod and Dr Jess French get under the skin of the harbour porpoise to unravel this enigmatic and shy aquatic mammal\\u2019s extraordinary survival skills - from it\\u2019s ability to dive for long periods to accurately echolocating its fast moving prey. They join Rob Deaville, project leader for the Cetacean\\u2019s Stranding Investigations Programme at ZSL (Zoological Society of London) to open up and examine what makes this animal unique in terms of its anatomy, behaviour and evolutionary history.