#ice balls

A couple recently stumbled upon the rare occurrence of "ice eggs" while hiking in Finland. Risto Mattila

Get yourself some big ass balls! (to put in your drinks).

Ice Balls  

Known both as ice boulders and ice balls, the ice formations photographed above along Lake Michigan back in 2013 seem like a rare find, but they have actually been found around the world in locations scattered from Antarctica to the Arctic, and in many places around the Great Lakes region.

They're made of both slush and a type of ice known as frazil ice, which occurs when loose, needle-shaped ice crystals collect in the water. When they form in calmer waters, they often look more like pancakes or flattened discs, while in more turbulent waters they resemble the more spherical ice balls shown above.

Ice balls are formed by the action of waves turning them over again and again, rolling them into spherical shapes. They can also gather sand if there's sand present in the water.

Waves and strong winds often push them ashore, but sometimes long lines of ice boulders are found out in the open waters of the Great Lakes. They can even freeze together in large sheets if the air and water are cold enough.