It happens every year. As soon as the weather gets a little warmer, there's always a story on the news reporting an accidental drowning of a child. I think when us parents see that, we rush the unimaginable of that happening to us out of our minds as quickly as we can. I think we stupidly also think, "Well, I'd know if my child was drowning". That's not true at all.
The signs of drowning aren't always what you see in the movies. Drowning can be a very quiet, splash-free accident.