弓头鲸
弓头鲸（学名：Balaena mysticetus）旧称北极鲸，又称北极露脊鲸、格陵兰露脊鲸、格陵兰鲸、巨极地鲸，是须鲸小目、露脊鲸科下一种生活拉北极海域个大型鲸，成年后体长可达20米，体重超过90吨（雌性比雄性大）。
弓头鲸体形粗壮，体色呈深色，无背鳍，上颚窄，下颚呈弓形。
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