When I was little my brother gave me a scientific explanation for why ocean water was salty. He told me that kids on the beach would throw sand in the water, which would disolve and become salt. I believed this for a long time.
A childhood belief about water

others believed things like this
- I used to think that pickles grew naturally in the sea, and that's why the water in the jar was so salty.Anon
- when i was a child (of course)i used to believe that the sea is salty because God throws bags of salt into it.— Kafka
- When I was a kid, I use to believe, when I put salt in my bath water I will turn into a mermaid.— marletha
- i used to believe that the water in the ocean went away a night......then came back in the morning.— Beverly
- When I was little I thought that if I stayed a long time in the water I would become a mermaid.— Salma
- i used to think salt was made of sand— hibiscus