The government in my country is planning to install sea wind turbines as a part of the transition to green energy, and the communist party led local town govenment body is against it.

Lots of sensible reasons are stated, like the impact on local people and fishermen, and the energy being used for capitalists and not for the people, but one of the reasons is them supposedly being harmful to the environment. Is there any proof for this?

I would get them saying it for wind turbines being installed in forests or mountains where you would have to cut down many trees, but I don't get it when it's at sea.