A swirling current, also known as an EDDY, is a circular motion of water or air that occurs when a larger flow of water or air is disrupted. Eddies can form in rivers, oceans, and even in the atmosphere. They are often caused by obstacles such as rocks, trees, or other objects that disrupt the flow of the current. Eddies can be beneficial, providing oxygen to aquatic life, or they can be dangerous, creating hazardous conditions for boats and swimmers.