The icebergs are huge masses of ice floating in the sea. This is because ice is less dense than liquid water and, therefore, is lighter. The icebergs are formed from cracking and falling from glaciers reach the sea. The sizes of these formations are variable immense icebergs have been spotted 160 kilometers long and a height of 700 meters. However, frequently reach 200 or 300 meters long and protrude from the surface of the sea some 50 or 70 meters, although 90% of the icebergs, approximately, is under water. The icebergs more dangers to navigation are those of Greenland, driven by the current of Labrador, are directed at the banks of Newfoundland through which the transatlantic route.
The Glaciers are large masses of ice that form in the mountains and high latitudes. There are different kinds of glaciers: Alpine, the piedmont and continental ice. Precisely the latter arising icebergs.