adj. palmiped ; web-toed ; web-footed
misc. finfooted
海鸥科长翅、蹼足的水鸟。
比如人类胚胎会发育出腮、蹼足和退化的尾巴，映现出远古水生生物的性状。
Human embryos, for instance, develop, then lose, gills, webbed feet and rudimentary tails, reflecting their ancient aquatic life styles.
天鹅：鸭科的各种大型水禽，主要是天鹅和哑天鹅属，有蹼足、长而细的脖子和通常为白色的羽毛。
Any of various large aquatic birds of the family Anatidae chiefly of the genera Cygnus and Olor, having webbed feet, a long slender neck, and usually white plumage.
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