What is the name for rolling and curving eddies that turn into spirals?

The name for rolling and curving eddies that turn into spirals is vortices. Vortices are swirling masses of fluid that can form in liquids or gases. They are often created by the interaction of two or more fluid flows, such as when a jet of water hits a surface or when air flows over a wing. Vortices can also be created by the rotation of a fluid, such as when a whirlpool forms in a river or a tornado forms in the atmosphere. Vortices can range in size from microscopic to gigantic, and they can have a significant impact on the environment around them. For example, vortices can cause erosion, transport sediment, and mix fluids. They can also be used to generate electricity, propel vehicles, and create special effects in movies and television.