Whale sightings during POLARSTERN cruise PS144

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....极地海洋中的鲸类分布与丰度数据相当匮乏，原因在于标准调查方法——线样调查法（line-transect surveys）的实施既颇具挑战性，且成本高昂。