UN says humanity must save the oceans to save itself Crumbling ice sheets, rising seas, melting glaciers, ocean dead zones, toxic algae blooms -- a raft of impacts on sea and ice are decimating fish stocks, destroying renewable sources of fresh water, and incubating superstorms that will ravage some megacities every year, according to a landmark assessment approved by the 195-nation Intergovernmental Panel on Climate Change (IPCC). SOUNDBITE