Whale sightings during POLARSTERN cruise PS122/5 (MOSAiC)

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....极地海洋中鲸类分布与种群丰度的相关数据相当匮乏，这是由于标准调查方法——样线调查（line-transect surveys）——的实施极具挑战性且成本高昂。