鲸须固定在嘴的上颚,由两块角质板组成,每块角质板(露脊鲸的角质板长达3.6公尺)是一组平行的带有缘缨的板条,缘缨缠结在一起形成一个密筛。

• "It consists of two horny plates attached to the roof of the mouth. Each plate (as long as 3.6 m, in the right whale) is composed of parallel slats with fringes that mat together to form a sieve."