Great Nature III delves further into the wonders of the natural world, delivering spectacular footage of many never-before-seen natural phenomena. Mysterious giant waterfalls, hidden submarine canyons, rare lightning displays, and a first-time look at the formation of sea ice. All these and more are captured on camera in Great Nature III. The Miracle of the Creation of Ice,Russia: At minus 30 degrees, the sea off Sakhalin freezes in just three hours! This great mystery of "The moment sea ice is born" has been filmed for the first time.