I remember when I was about four or five, my mother used to take me to the local swimming pool back home in Finland, and the swimming pool floor had black and white tiles. I thought the black tiles were whales and if I stepped on one of them they'd eat me!
A childhood belief about swimming pools

others believed things like this
- I believed that the ladder on the back of a trailer/rv led up to a swimming pool.— marilese
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon
- 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
- I used to believe that the waves in the ocean were made from whales swimming by...— Tina