these sea level rises don't sound like much but when you get a high tide backed by wind or a strom there can be a lot of beach erosion and the small increase makes the difference from nearly to just too much and you also get inundation in places . Yes I know , always is at various places but will be a lot worse and it's not just Pacific Islands .
We know about New Orleans but also much of the coast of Florida is at risk and amny other coastlines in the world . Singapore and Holland have a lot of reclaimed land at risk . The centre of Bunbury in WA is less than a metre above sea level .