The coastal hypothesis suggests an economy based on marine mammal hunting, saltwater fishing gathering, and the use of watercraft.

沿海假说提出了一种以捕猎海洋哺乳动物、收集捕捞咸水鱼和使用船只为基础的经济模式。

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The coastal hypothesis suggests an economy based on marine mammal hunting, saltwater fishing, shellfish gathering, and the use of watercraft.

海岸假说提出了一种以捕猎海洋哺乳动物、捕捞咸水鱼类、采集贝类和使用船只为基础的经济模式。

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Marine mammal experts and the WWF believe the polar bear population in the region is increasing.

海洋哺乳动物专家和世界自然基金会(WWF)相信，现在该地区的北极熊数目在持续增长。

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Some data, such as huge sound files of marine mammal vocalizations, remain onboard for future retrieval.

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Richard O' Barry is the World Society for the Protection of Animals' marine mammal specialist.

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That according to marine mammal special Brent Norberg, of the Federal Fishery Service.

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