ICE EVERYWHERE

Blue ice is essentially ancient ice. It starts as snowfall that compacts over time so that the air between the flakes is squeezed out. Eventually – in five hundred years or so – it becomes so dense that it absorbs different light waves and appears blue.

Icebergs, in their infinite variety. They all had the same origin: when a chunk of glacier broke off and crashed into the water but then took a different journey as the sea began to sculpt them.

On average, about 7/8 of an iceberg’s mass lies below the surface. A berg that reaches two hundred feet above sea level can have a fourteen-hundred-foot keel.