Brinicles

Craig sent this. Way, way too cool!:

“We were just blown away by how beautiful they were,” producer Kathryn Jeffs told FoxNews.com. Jeffs was in Antarctica with Miller and Anderson to capture the unique event. “We were exceptionally excited and we knew we had something that had never been filmed before, never been seen before. No one has really seen the formation of a brinicle.”

This magnificent yet terrifying phenomenon is caused by brine, or naturally occurring salt water, which tends to be denser than the surrounding seawater and has a lower freezing point. When super cold brine trickles down, the warmer seawater surrounds the cyclone with a brittle layer of ice.

But capturing the event on tape was no easy feat, as the crew battled brutal conditions, technical challenges, and even seal attacks.