This is one of the most amazing things I’ve ever seen. Off Mackinaw City, in a particularly cold winter, the water in Lake Huron below the surface ice supercooled. It expanded to break through the surface ice and froze into this incredible wave (courtesy codgy.com).

We sail to the Great Lakes during the summertime, so no frozen waves for us (thankfully!). Normally, to see anything remotely like this, you have to go to Antarctica.