In 2015, residents of Cape Town were days away from having their taps run dry following severe drought in South Africa. The city is predicted to have run out of water by 2030 and it is not the only area at risk.
Extreme bushfires, floods and a lack of habitat due to excessive tree-clearing, have all led to the koala population plummeting in Australia. On the country's east coast, the koala is now listed as endangered.
Pollution, development projects and hunting have led to a decline of river dolphins. Millions of people rely on rivers for water and food and the river dolphin plays a critical role by helping to keep rivers in balance.
European mink were once widespread along streams and rivers but today they are disappearing. Habitat loss, over-hunting and competition from invasive species have led to their severe decline.