Freezing temperatures in Lovund, Norway led to a school of herring fish being frozen in place close to the shore.
Ingolf Kristiansen took a photo of the extraordinary sight on Sunday.
Temperatures in Lovund last week were at about 18 degrees Fahrenheit.
Seawater freezes at a temperature of 28.4 degrees Fahrenheit, which is a colder temperature than the one required for fresh water to freeze (32 degrees Fahrenheit), according to the National Oceanic and Atmospheric Administration.
It is speculated that the herring had been herded into the shallows by a natural predator and were not able to escape to deeper water less prone to freeze, according to Aril Slotte, a pelagic fish expert at Norway’s Institute of Marine Research.
Herrings have had a particularly hard time in Norway due to the cold weather.
Twenty tons of herring washed onto a beach in northern Norway in January 2012. Scientists theorized that lack of oxygen, disease or stormy weather caused the animals at sea.
Mass animal deaths in the ocean are generally linked to some type of environment instability, such as sudden temperature shifts or human actions, the Huffington Post reports.
Sources: National Oceanic Atmospheric Administration, Huffington Post, International Business Times