Mottled, blue-gray baleen whale (Balaenoptera musculus), also called sulfur-bottom whale because of the yellowish diatoms on some individuals.

 
  • 一种带有淡色斑点的蓝灰色须鲸,学名Balaenoptera musculus,亦称硫底鲸,因为有些个体的身上长有浅黄色的矽藻而带硫黄色。
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