Whale sightings during POLARSTERN cruise ARK-XXIII/1

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....由于标准调查方法——线样调查（line-transect surveys）的实施难度大且成本高昂，极地海洋中鲸类分布与丰度的相关数据相当匮乏。