I was in a familiar place. I was with two other people, one male and one female. We walked to this place where there were multiple pools of the bluest water. It was a public/private place. There were a few other groups of people enjoying it. There was a house like structure with shelves and books and VHS movies. I stripped down to my underwear to swim. The other girl I was with had more conservative underwear, I was wearing black lace. We got in the water and swam towards the bluest part. It seemed a little dangerous, the flow of the water was strong and there were sea anenomies at the bottom. We didn't take the risk and stayed exploring where we were.