I had just finished swimming at a public pool and was in the changeroom. I removed my swimsuit and made my way to the showers. I was showering when I heard a commotion and came out to see what it was. It was a group of 4 teen girls in street clothes running around in the men's changeroom. I had never seen any of them before but they were seeing a lot more of us guys in the changeroom then they should be. The other guys in the changeroom were screaming at them to get out. They were seeing all the guys in the changeroom most of who were naked. That's when I noticed what the other guys must have noticed which is that these girls had smartphones in their hands and were taking pictures as they ran around. They quickly left but not before seeing and probably capturing images of all of us. I don't know what they plan to do with the pictures they took but I know they definitely took some of me. I am worried the pictures may be posted somewhere and people I know may see me naked.