Not sure if this is the right place to post this question.
Had my pool for about 7 years and about 2 years ago I noticed these wrinkles around my two main drains in the deep end. Not sure exactly when or how this happened. I did get a few wrinkles in the middle of the pool after Hurricane Sandy (I am in NJ), but I don't think it was from that storm.
I am not having any issues with water leaking or any other problems. Should I be concerned about this? It looks exactly the same on around both Main drains.