An interesting phenomenon appears along the shores of the Great Lakes whenever the weather conditions are right—when it’s really cold and just windy enough. As temperatures plummet, small bits of ice in the nearshore water acts as seeds, collecting ice and size as water freezes around it to form sometimes sizable ice balls. Wave action and the friction of fellow ice balls round them off nicely.

It’s like a giant cocktail. Check out the video:

Want to read more about cold things? Check these stories out:

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