'Icebergs are blocks of fresh-water ice that break off from glaciers and float out to sea. Glaciers are formed in polar regions where snowfall lasts for centuries, or even millennia, without entirely melting, and is eventually compressed into ice.

In the North Altantic, most icebergs originate from the tidewater glaciers of Western Greenland. Compressed snow becomes firm, a granular snow, transformed eventually by pressure into a dense ice. The weight of the icecap builds, causing the ice to flow as much as 60 feet a day through openings in the coastal mountains. Rising and falling tides cause slabs of ice to break off and form moving ''rivers of ice'''

Glaciers, slow moving rivers of ice, flow over land in Antarctica and the Arctic. When the edge of a glacier meets a sea or ocean, it forms an ice shelf. The edge of the glacier floats on water.

An iceberg forms when part of the ice shelf cracks and breaks off. The iceberg is free to float into the ocean and drift away from the land.

Glaciers form on land as a result of an accumulation of snow over thousands of years. Successive layers compress earlier accumulations until, at depths below 60 to 70 metres, glacial ice is formed. Glaciers “flow” or “creep” outward under their own weight like a viscous fluid. When the edge of a glacier advances into the ocean, the pieces that break off are what we call icebergs.

It's a well-known fact that the majority of an iceberg lies below the surface -- but just as stealthily hidden are their fascinating qualities. Traveling the seas, teeming with life, and sometimes even making a noise called 'bergie seltzer,' there's so much more than meets the eye. Camille Seaman gives homage to these icy isles.

Glaciers form on land as a result of an accumulation of snow over thousands of years. Successive layers compress earlier accumulations until, at depths below 60 to 70 metres, glacial ice is formed. Glaciers “flow” or “creep” outward under their own weight like a viscous fluid. When the edge of a glacier advances into the ocean, the pieces that break off are what we call icebergs.