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Mussels are marine animals with soft bodies that live inside hard, black shells. You may encounter them clinging to rocks or buried in sand while walking along the shore. Mussels act like nature’s small filters, helping to keep seawater clean.Where Do They Live?Mussels typically live in colonies on rocky coastal areas, on the pilings of piers, and even on the undersides of ships. They attach tightly between rocks, to each other, and sometimes beneath the sand. The structure that enables mussels

Have you ever seen a fish gliding like a flying carpet over the seafloor? Rays are striking creatures distinguished by their flat, broad bodies that live on the ocean and river floors. The fins along the sides of their bodies resemble wings, and rays propel themselves through water by flapping these fins. Rays are closely related to sharks.Where Do They Live? 🗺️Rays typically prefer shallow coastal areas in tropical and temperate seas and can be found in nearly all the world’s oceans except the

What Is an Hourglass?An hourglass is an ancient and simple device used to measure the passage of time. It consists of two glass bulbs connected by a narrow tube, each containing fine sand. The time elapsed is measured as the sand flows from the upper bulb to the lower one. The complete transfer of sand from the top bulb to the bottom bulb represents a specific time interval, typically limited to a few minutes.How Does an Hourglass Work?The fundamental principle of the hourglass is gravity. The s