I had me my mom and my sisters were in the entrance of an exibit museum whatchamacallit where we could get tickets. In this entrance there were 5 mini exhibits to showcase what was in the full museum. They were all cut into the wall in a dome shape and had this sliding door to close them off. Anyway, while my mom got tickets me and my little sis walked around and looked at the mini exhibits. There was one about an Olympic swimmer and how he got where he was. The floor of the exhibit was made of glass and had a video playing underneath. At the end of the video it showed a pool with the guy swimming in it. The floor basically looked like it was water on this scene. So we were looking around the room and eventually got bored and started to leave. My sis got out but as I was at the edge of the room the swimming pool scene of the video came but on but this time it was actual water and over 6ft deep. I feel in and because of shook or something I forgot how to swim. Little sis kinda stood there helpless because she can't really swim. Of course, this employee comes over and is completely ignorant to what was happening. She starts to close the exibit off with this big ass sliding door. I tried to scream but I kept inhaling water so the only thing I could do was put my hand between the sliding door and the wall. My had was able to block it from closing all the way and the employee reopened it and saw me. She pulled me out and apologized. I ended up getting free food.