Pine Island Glacier is the most of quick melting Antarctica’s glaciers. In 2015 the huge iceberg separated from it with the area of 585 square kilometers. Scientists believe that in the next few decades other large pieces may “fall off” of the ice sheet in West Antarctica. This will have a catastrophic effect on the environment. Sea levels will rise by many meters, causing flooding in coastal areas throughout the world. Pine Island plays a vital role in preventing this catastrophe, because it acts as a “stop-gap”, which restrains the ice flows.