A seven-year peer-reviewed study shows no detrimental effect on fish that live near the sea floor and a positive effect on numbers of black sea bass.
Block Island Wind Farm in Rhode Island is the United States’ first offshore wind farm. The 30-megawatt, five-turbine offshore wind farm began commercial operations in December 2016 and generates enough energy to power 17,000 homes. And it turns out, it’s perfectly safe, and sometimes even beneficial, for fish.

This study suggests moderate support for an offshore wind farm by anglers.
Offshore wind energy is a critical component of a broader transition
to renewable energy in many countries, providing for current and future
electricity needs in a less carbon-intensive manner. Over the past two
decades, wind turbines operating in marine environments have become
a significant source of electricity in Northern Europe and China.