As the waves crash onto the shore or lap at the beach, depending on where you are, there's usually some leftover frothy bits that cling to the sand. On windy days, this foamy stuff can even be lifted off the ground and blown around. What is it? And is it dangerous to touch, or let the dog run around in it?
It's sea foam, and it is not nearly as green as the color we call sea foam. It's usually whitish, though it's probably a little dingy rather than being sparkling white. Sometimes it's more of a reddish-brown, though, and those are the sea foam bubbles to watch out for. Let's take a look at how sea foam forms and whether it has any impacts on human health.