Long-Distance Movement of a Sei Whale in the North Atlantic, 2005

<p>Long-distance migration for most species of baleen whales is poorly understood because of the practical difficulties and substantial expense involved in gathering...多数须鲸（baleen whale）物种的长距离洄游行为目前尚未得到充分认知，原因在于相关数据采集过程中存在实际操作难题与高额成本。