Frozen sea
When the sea around Antarctica drops to minus 1.9 degrees centigrade, it begins to freeze. A slight swell on the surface produces pancake ice - vaguely circular or square slabs of ice with raised edges. In the frigid air, the ice above the waterline grows into crystals. The early explorers called these fantastic shapes ice flowers. As it gets colder, the ice thickens and at the coast it freezes fast to the margins of the land. Farther out the pack ice consolidates into vast plains of sea ice.
Duration:
This clip is from
Featured in...
大象传媒 Nature
Be captivated, informed and inspired by the world's wildlife.
More clips from The Door Closes
-
High waters
Duration: 01:58
-
Glorious mud
Duration: 01:25
-
First swim
Duration: 05:24
More clips from Life in the Freezer
-
Frozen Life—The Bountiful Sea
Duration: 01:39
-
Tiny survivors—The Race to Breed
Duration: 02:23
-
Extreme growth—The Race to Breed
Duration: 01:46
-
Krill killers—The Bountiful Sea
Duration: 01:22