That shell isn’t a rock. It’s an exoskeleton. A mollusk called a conch (say “konk”) makes it. These guys are huge—up to a foot long. They live in warm, shallow waters. Think Caribbean, Florida Keys, or the Bahamas. They’re lazy but brilliant architects.
They secrete calcium carbonate from their bodies. It hardens into a spiral fortress. As the snail grows, it adds more chambers. The shell gets bigger and twistier. It’s like they’re building a spiral staircase for their squishy butts.
