Whale sightings during POLARSTERN cruise ANT-XXV/2

Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given...本数据集所记录的日期与时间均采用协调世界时（UTC）。物种识别置信度：若观测者可明确辨识目标物种，则判定为确定识别。个体数量将依据给定选项进行分箱处理……