Whirlpools are powerful bodies of water that form when a current or tide meets an obstacle, such as a rock or a shoreline. They are characterized by swirling water and can be dangerous to swimmers and boats. The term 'WHIRLPOOL' is often used interchangeably with the terms 'SWIRLS' (6 letters), 'VORTEXES' (8 letters), and 'EDDIES' (6 letters). All of these terms refer to the same phenomenon, which is a rotating body of water that can be found in oceans, rivers, and other bodies of water.