[dead]

In heavy seas, work on the wind farm is suspended. The same applies when porpoises and their young are spotted, because of the potential damage to their sensitive hearing by construction noise.

Perhaps if it hurts their ears, they will swim away when construction starts, Zigfried.

[Rockpile]

The underwater structures of the windmills are going to attract fish which will bring in the porpoises.

I suspect that the porpoises won’t be all that bothered by the man made noise as opposed to doing without some easy fishing.