I took this shot, while riding on a dog sled going over an ice highway. If you check out the GPS coordinates for this photo (69.239444, -50.546111), you'll see I'm smack dab in what should be a body of water. The flat ice is a much more manageable terrain for the dogs and sled to traverse.
Just like when shooting from a moving vehicle, it's best to have your camera in shutter priority mode (Tv for Canon) for this kind of shot. Generally as fast as your camera will go, although you do have to balance against available light. In this case that meant shooting at 1/6400 instead of 1/8000 and bumping the ISO up to 400.
Scenery along the Ilulissat Icefjord, a UNESCO World Heritage Site.