Strange tapes on the water

We need a compass and a pencil to draw circles, but nature only needs a whirlpool to create a perfect circle with tape.

Roy Jefferies happened to see an ice circle about 3 meters in diameter moving on the Otter River near the town of Honiton, in the Devon county of England when he walked in the morning. Similar circles have appeared in the Arctic, Scandinavia and Canada, but this is the first time people have seen the ice circle appear in the land of fog.

They appear in curved sections on the river, where fast-flowing water creates vortex forces large enough to break an ice sheet and make it spin. When the circle rotates, it grinds into the tape around creating a perfect circle.

Roy Jefferies watches the ice circle on the Ottor River, about 2 meters from the shore and spins over 4 minutes.

An ice circle found in Russia lies between many smaller circles.

Ice circle in a lake at Ontorio, eastern Canada.

An ice circle in Michigan State, USA.