What is the white stuff on waves called?

Excuse me, I couldn't help but notice your curiosity about the mysterious white substance that appears on waves. Could you please clarify, are you referring to the foam or froth that sometimes forms on the surface of the ocean or a lake? If so, that white stuff is often called "sea foam" or "wave foam." It's created when strong winds or breaking waves cause tiny bubbles of air to mix with seawater, which then rise to the surface and form a frothy layer. Does this answer your question, or were you referring to something else entirely?