These are starfishes. The starfishes have five legs.

这些是海星，海星有五条腿。

Don't you think it is a waste of your time as there are hundreds of starfishes still lying around.

你们不觉得这是在浪费时间吗？还有成千上万只海星躺在岸上呢！

The man smiled and said, "It certainly would," so he too pick up the starfishes and threw them into the sea.

那人笑了笑说：“非常愿意。”于是，他也捡起海星，朝大海扔去。