Wet Sand

You know what I find fascinating. Wet sand. Just, how is it that sand gets wet? Towels I understand. They absorb the moisture. Same with hair. But sand is just silicon, right? Tiny rocks? Discrete grains? Can sand “absorb” water? Or is sand being wet more about water binding grains together? An interparticle reaction as opposed to an intra one? I dunno, just a random thing I wonder about.