Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous.

黄一种已经灭绝的不会飞翔的水，生活在白垩纪期。

Hesperornis was a speedy swimmer, taking short dives to feed on shoals of fish or other passing food.

它们快速的游泳者，进行短时间潜水来捕食其他经过的猎物。