Eh, anecdotally, I almost drowned when I was a kid before I learned to swim by literally jumping in too deep water. This was in the ocean and not a pool, but I

Eh, anecdotally, I almost drowned when I was a kid before I learned to swim by literally jumping in too deep water. This was in the ocean and not a pool, but I walked out on the bridge to the first division and jumped in because I knew that it was shallow enough there for me to stand on the bottom with my head over the water. Except it was at highwater now, so my head ended up I'd say almost a foot under water. I landed on the bottom and managed to contain my panic enough to kick off and angle myself so I'd go towards shore and not away from it. In the end I was fine, but a lifeguard watching me would've been caught totally unawares.