Miniature whirlpool, also known as an EDDY, is a small circular current of water that rotates in a clockwise or counterclockwise direction. It is usually formed when two opposing currents meet, creating a swirling effect. The term EDDY comes from the Old English word edd, which means 'to EDDY or whirl around.' Eddies can be found in rivers, oceans, and other bodies of water. They are often used to study the effects of turbulence on water flow.