They compared sperm from a fruit fly, sea urchin, rooster, fish and human.

他们比较了果蝇、海胆、公鸡、鱼类和人类的基因。

youdao

The sperm whale does not feed on small fish like other whales.

抹香鲸不像其他鲸鱼那样以小鱼为食。

youdao

Scientists drained some fish of their sperm or eggs, which were later fertilized to create hatchlings to reintroduce or support the fish in other parts of their ancient range in the Great Lakes, Hudson Bay and Mississippi basins.

WSJ: Standing Guard for the Sturgeon