Whale sightings during POLARSTERN cruise PS121
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Data on whale distribution and abundance in the polar oceans is rather sparse, as implementing the standard surveying method, line-transect surveys, is challenging and costly....
极地海洋中鲸类的分布与丰度相关数据相当匮乏，这是因为实施标准调查方法——线样调查（line-transect surveys）——既具有挑战性且成本高昂……
