http://theweek.i2p/climate-change/1020051/the-dire-consequences-of-the-worlds-relentless-warming-oceans
Warmer oceans can lead to cascading problems, ranging from extinction events to infrastructure damage. Notably, warmer water has a lower oxygen content , which is harmful to the marine ecosystem and the fishing community. Warming can also cause some ocean regions to have more salt than others : When the warm water evaporates, it leaves more salt, and when it rains in other regions, that water becomes fresher.