Brent Stephenson / Huge iceberg with streaked sky under expansive open sky. Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Huge iceberg with group of Chinstrap Penguins (Pygoscelis antarctica) close to the water. Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Iceberg, Drake Passage, near the South Shetland Islands, Antarctica, December.

Brent Stephenson / Evening sun catching the clouds with snow-clad mountains. Beagle Channel, Tierra del Fuego Archipelago, South America, December.

Inaki Relanzon / Stormy skies over the sea in the bay of Husavik, north Iceland