> or the sea This can be surprisingly non-obvious. A 5-ish year old walking around and splashing at the beach. In shallow below-knee water. With shallow abo

> or the sea This can be surprisingly non-obvious. A 5-ish year old walking around and splashing at the beach. In shallow below-knee water. With shallow above-knee surf. No worries. Gets knocked down. Repeated wave impacts, unstable sand, water hitting face, struggle to breathe air and not water. They're unable to stand up again. Keep trying and falling. And then not trying. The parent was a couple meters away, watching, interpreting this as play. Bystanders stepped in. Intervention was trivially easy. Parent criticized kid for fooling around. So even afterwards, it was non-obvious they had been watching their kid drown. Perhaps if you don't have experience where the challenge to breathing isn't absence of air, but the presence of too much water mixed into it?