You can call it slurpee waves (inspired by the 7-Eleven Slurpee drink), or slushy waves, but what you've really got here are frozen waves. Jonathan Nimerfroh was in the right place at the right time.
The surfer and photographer based in Massachusetts captured a rare natural moment.
The temperatures in Nantucket were so low that his camera actually "froze" the waves breaking near him.
"I just noticed a really bizarre horizon. The snow was up to my knees, getting to the water. I saw these crazy half-frozen waves," Nimerfroh told The New York Times.
"Usually, on a summer day, you can hear the waves crashing, but it was absolutely silent. It was like I had earplugs in my ears."
You can often witness calm water freezing, but with two to three waves, it's quite rare and unusual.
According to glaciologists, fresh water freezes at 32 degrees Fahrenheit, and ocean water freezes at about 28.4 degrees Fahrenheit because of the salt in it.
The glassy and icy barrels of Nantucket can't be surfed. However, you can hang these beautiful shots by Jonathan Nimerfroh on your living room walls.