Books Set in Underwater Cities?

Hi there! I’m trying to find some science fiction books (or fantasy!) where the story is set in an underwater city. My inspiration for this is The Adventure Zone: Ethersea (it’s a podcast) and I would love to be in that kind of world again. Not sure if this is the place to ask, if there are other subbreddits please recommend them. I tried searching but I was a bit confused by all the options!