Weird balls of ice have covered a beach in Finland | CNN

Tarja Terentjeff shot these photos of ice balls that formed on the beach in Hailuoto, Finland, an island in the Black Sea. "The whole beach was full of these ice balls," she said. Terentjeff says she loves taking nature photos and visits the island from time to time because of its beauty. This was amazing phenomenon, never seen before. The whole beach was full of these ice balls. The island of Hailuoto is about 30 min ferry drive from city of Oulu. I took these photos today. First they have been soft balls but yesterday it was -18 and all of these were frozen, icy balls! I have no idea how phenomenon has happened! There have been a lot of moist and frost in the area right now. Today weather was amazing by the sea, no wind, nice, warm and synny Finnish November day! Sure, you can use my pictures with my name. Can I help you any other ways?

Strange balls of ice have covered a beach in Finland

00:31 - Source: CNN

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CNN —

Egg-like ice balls are piled up on a beach in Hailuoto, Finland, delighting people who braved the cold to visit the island.

“This was [an] amazing phenomenon, [I’ve]never seen before,” Tarja Terentjeff told CNN.”The whole beach was full of these ice balls.”

Hailuoto is in the Gulf of Bothnia, which separates Finland and Sweden in the northernmost arm of the Baltic Sea.

Terentjeff lives about 35 miles away in Oulu, and will drive and take a 30-minute ferry ride from the mainland out to the island because it’s such a beautiful place.

Sirpa Tero told CNN that she’s seen this before, but not over such a large area. She said it seemed to cover miles.

Ice balls such as these form when turbulent water near the shore breaks up a layer of slushy ice, according to CNN Weather.

The layers of slush stick together and build upon each other in the supercooled water. As the waves crash ashore it causes the ice to spin in place, which smooths them into balls.

CNN meteorologist Judson Jones contributed to this story.