ポリニヤ

noun

polynya; open water area in sea ice

A geographical term for a stretch of open water surrounded by sea ice, commonly used in polar oceanography.

from Russian polyn'ya

• 北ほっ極きょく海かいでは、冬ふゆでもポリニヤが形けい成せいされることがある。

  In the Arctic Ocean, polynyas can form even in winter.