What happens to 100-200 m long pipe in underwater waves when e.g. a hurricane or a storm comes?

That’s an excellent question, but it is also similar to asking what will happen to wind turbines in a storm.

Maybe some will break. Maybe that’s an acceptable outcome. Probably they can be improved to reduce that risk

This platform (from video in the article) seems fragile compared to wind turbines or oil rigging platforms.

I know that underwater is calm even during storm but happens to the top part that is connected with pipe to bottom part?