Jenny and some elephants
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Elephants in crisis: The ivory trade explained

3 October 2016 Last updated at 10:30 BST

Countries from across the world are meeting in Johannesburg to talk about protecting the world's wildlife.

One of the key issues being discussed is the drastic decline in the number of elephants in the world. One of the greatest threats to these animals is the illegal poaching of elephants for their tusks.

Even though it is not allowed, criminals are killing elephants and selling their tusks around the world for large amounts of money. This is the illegal ivory trade. However, buying and selling some kinds of ivory within certain countries is still legal.

Jenny looks at just how elephant numbers are in so much trouble and what is happening to try to protect these much-loved animals.