But the lowest summer ice cap on record put sea ice far north of the outer continental shelf, the shallow, life-rich shelf of ocean bottom in the Bering and Chukchi seas.

• 但今年夏天北极冰帽面积缩小至历史最低记录，使海冰推移至白令海和楚科奇海一带底栖生物丰富的浅大陆架外围的远北地区。