When I was 5, my family and I were on vacation somewhere and we were swimming in the hotel's pool. I refused to go in the deep end of it because of the stingray that was laying in the bottom. I was sure it was going to eat me. In reality...*sigh*....it was the cover of the filter
A childhood belief about swimming pools

others believed things like this
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon
- i used to believe there were invisible sharks in the deep end of the pool, thanks to my older brother.— Melissa
- I believed that the ladder on the back of a trailer/rv led up to a swimming pool.— marilese
- I used to believe that if you farted while swimming in the pool, it could propel you foward really fast.— Rick
- Up until I was in 3rd grade I believed my bathing cap is what kept me afloat in the swimming pool! Anon
- When I was a kid I used to think the "carpool lane" was an actual pool cars went swimming in— skeez