He witnessed his friend get eaten by a crocodile.

I’ve posted this before but here we go again. When we were younger we would play a game where we would throw a pot lid as far as we could into the water and someone would have to fetch it. Basically like playing fetch with your dog. The kid who would win was the one who swum the furthest. One day, a kid through the lid really far but the other kid was determined to get it. He swum out really far and then bam. The crocodile got him and dragged him underwater.