Up until a few years ago I thought that the SEAL in Navy SEALS was because they were trained to be vary agile in the water just like seals. Until later when I realized SEALs part was capitalized at it was an abrreviation for sea ,air, and land teams. Now I see , comically its a bit of both.
A childhood belief about names

others believed things like this
- when i was little i thought that NAVY SEALS were actual seals that were navy blueAnon
- I used to believe that seals were dogs that had amputated legs.Anon
- When I was a child, I used to believe that Catalonia was the unique part of land of the world.Anon
- I used to think the Back Street Boys were black. I also thought Seal was a boy band. — Tufty
- My sister thought that "Ice, Ice Baby" by Vanilla Ice was actually "US Navy".Anon
- I used to think that
"The land of make believe"
was
"The land of baked beans."— Baked Bean!