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On Lake Jozini in South Africa, Steve and scientist Cormac Price find crocodiles living together and discovers how they communicate.
Wildlife presenter Steve Backshall is on an adventure to find crocodiles in South Africa. With help from locals and experts, he dares to get close to some of these ancient creatures.
At the Croc World conservation centre in South Africa, Steve uses an infra-red camera to show us how cold-blooded crocs warm up and stay cool.