I remember when I was 12 or 13, I was afraid to swim in my parents pool at night, even with the pool light on. I always thought there was a shark that would eat me. So when swimming with friends at night, I was always preoccupied with checking the area around me for sharks. I’d especially never leave my back to the deep end (6ft) at night.
Even to this day I have the same fear, despite the fact that I know there is no shark and that one couldn’t even survive in the pool. So I was thinking, is this delusional or just the product of an overactive imagination from when I was a child (though 12 or 13 should be more mature for this in my opinion.)