Made up of four coral islands and five atolls off the coast of Australia, Tuvalu
has a maximum height of only 4.5 meters above sea level. But it's not just flooding that could make these islands uninhabitable, rising saltwater could also damage crops such as coconut and taro.
WATCH VIDEO: 100 Places to Remember Before They Disappaer: Tuvalu
photo: Stefan Lins via flickr