Possible unusual ice melt

From and according to the post: "Thousands of walruses gathered together in a dangerous "haul out" on the coast of Alaska earlier this month. Scientists say the walruses came ashore in such large numbers because their normal habitats, Arctic ice floes, are melting." I don't know if this is true and some scientists or natives would have to tell us if this is typical, annual activity or if this is unusual. Note that this is from National Geographic, whom I believe is trustworthy in their information and don't use false data to emotionalize or take a position. All I'm saying is, if it is unusual and truly due to heavier than usual ice melt, things are moving along quickly, regarding ice melt and global warming.