Relocation of finless porpoises in China boosts hopes for species' survival

Conservationists celebrate after four critically endangered Yangtze porpoises are successfully relocated to a secure reserve

Conservationists are celebrating after a successful relocation of endangered finless porpoise in China marked another milestone in the journey to save the species from extinction.

There are estimated to be only around 1,000 0f the species remaining in the wild - making it rarer than China's giant panda - and numbers are thought to be declining by more than 12% a year.