Underwater construction would be much safer.

水下建筑要安全得多。

Boating, military sonar, underwater construction, and seismic surveys for oil are occurring more often which may interfere with whale's communication.

划船、军用声纳、水下施工和石油地震勘探越来越频繁，这可能会干扰鲸鱼的通讯。