Any of various crustaceans of the subclass Cirripedia, which includes the barnacles and related organisms that attach themselves to objects or become parasitic in the adult stage.

• 蔓足类动物一种蔓足亚纲的甲壳类动物，包括藤壶及与其相关的生物，附着于物体上或在成熟阶段开始寄生生活