After watching the movie Jaws as a child I developed an increasingly irrational fear of sharks. I was convinced that sharks could survive in any bodies of water, including baths (baby sharks), spa pools (teenage sharks) and swimming pools (full-grown, eat-you-slowly-limb-by-limb sharks). To this day I don't like being in pools alone (baths ok) and swimming in the ocean terrifies me. Big Thanks to the makers of Jaws!
A childhood belief about swimming pools

others believed things like this
- I used to believe that sharks lived under the pools where the air vents were. — Carol
- i used to believe that pools had underwater doors that sharks were going to swim out of.— marky
- Waves are whales and sharks moving up and down under the waterAnon
- I used to believe that mosquito larvae were baby hammerhead sharks. Made the ditch a very dangerous place!— Karen
- I used to think that the pools was a swimming competition.— Matt
- I Used To Think That Jacuzzis Used To Have Sharks And I Would Never Get In One.— Tiffany