Cameras have revealed how elephants are able to get a drink of fresh water when faced with a stagnant waterhole. A BBC team discovered that the tusked giants use their trunks to delicately siphon off clean liquid that has settled at the top of the dirty pool. The footage shows how the elephants move incredibly slowly to avoid stirring up any sediment. The Natural History Unit team said this was the first time that they had seen this resourceful behaviour.
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