No one knows how the melomys got to Bramble cay a small island 31 miles off the coast of Papua New Guinea, but they did. In 2015 they became the first mammal to go extinct purely as a result of climate change, as their little island home at the end of the great barrier reef sink beneath the waves.
In 1978 a few hundred were counted, in 1998 just 100. In 2002 and 2004 just a few dozen were found. The amount of lady plants shrink by 97% between 2004-2014, and when a survey was carried out in 2014 no specimens could be found.