That is an iceberg, and in that way are all icebergs formed.

Mountains of ice formed by rain and snow--grand Arctic glaciers, undermined by the sea or by accumulation over-balanced--topple down upon the slightest provocation (moved by a shout, perhaps), and where they float, as this black-looking fellow does, they need deep water.

This berg in height is about ninety feet, and a due balance requires that a mass nine times as large as the part visible should be submerged.

Icebergs are seen about us now which rise two hundred feet above the water's level.
There are above head plenty of aquatic birds; ashore, or on the ice, are bears, foxes, reindeer; and in the sea there are innumerable animals.

We shall not see so much life near the North Pole, that is certain.