Here’s the surprising fact: quicksand is denser than salt water. That means you can float on your back in the stuff. Seriously. Treat it like a very gross, very heavy swimming pool. Slowly lean backward, distributing your weight across the surface.
Think of it as the world’s most disgusting snow angel. Arch your back, spread your arms, and let your legs rise to the surface. The sand will try to hold onto your feet, but if you’re patient, the buoyancy wins. You will feel ridiculous. You will also be alive, which is the whole point.