When I was a pre-teen in the early 1950’s always went to camp for a week in the summer which was sponsored by a group called Youth for Christ. Boys and girls had separate swim times. Girls’ swim suits had to be one piece, VERY modest and we had to wear a cover up when going to and from the pool. My parents did not allow me to go on a swim date until I was a senior in high school. Quite different from the way girls are raised today.
Am just amazed at the amount of nudity when we go to the beach. Just a whole lot of really fat people letting it all hang out.
Back in the early 60’s in my high school days we went coed skinny dipping.