Campaign to end China's shark fin trade
22 September 2011 Last updated at 07:57 BST
There are calls in China for people to stop eating shark fin soup, which is endangering some shark species.
As wages in China have risen, so has demand for the delicacy.
The campaign is being run by the international animal rights organisation WildAid, which has enlisted the support of China's most famous sportsman, Yao Ming.
Michael Bristow reports.