রাবেয়া নামের অর্থ কি?রাবেয়া নামের মেয়েরা কেমন হয়? রাবেয়া দিয়ে ২০টি সুন্দর নাম

In its most common sense, a shoal refers to a large group of fish swimming together, though unlike a "school," they aren't necessarily moving in a synchronized, disciplined direction—they’re just hanging out for social reasons or protection. Geographically, a shoal is a shallow landform like a sandbar or ridge that sits just below the water's surface, often creating a navigation hazard for ships. Whether you're talking about a crowd of tuna or a hidden patch of sand in the ocean, the core idea is a concentration of something that makes the water "thin" or crowded.