Huge icebergs and brash ice near Petermann Island on the west side of the Antarctic Peninsula.

Huge iceberg near Petermann Island on the west side of the Antarctic Peninsula.

Sunset on snow-capped mountains and icebergs surrounded in brash ice in Crystal Sound near the Antarctic Circle on the west side of the Antarctic Peninsula.

Sunset on snow-capped mountains and icebergs surrounded in brash ice in Crystal Sound near the Antarctic Circle on the west side of the Antarctic Peninsula.

Multi-year ice floes on the west side of the Antarctic Peninsula.

A view of the wreck of the Norwegian whaler Gubernor on the west side of the Antarctic Peninsula.

Brash ice detail in and around the Antarctic Peninsula during the summer months. More icebergs are being created as global warming is causing the breakup of major ice shelves and glaciers.

Views of the scenic Lemaire Channel on the west side of the Antarctic peninsula in Antarctica. Shown here is the National Geographic Endeavour navigating the channel through ice floes in late spring.

Iceberg detail in and around the abandoned British research base "W" in Crystal Sound near the Antarctic Peninsula during the summer months. More icebergs are being created as global warming is causing the breakup of major ice shelves and glaciers.

Adult south polar skua (Catharacta skua maccormicki) on the wing and feeding after an iceberg break-up near Port Lockroy on the western side of the Antarctic Peninsula. These birds will often harass other birds into dropping food while in flight.

Gerlache Strait under the spell of the endless Antarctic sunset, Antarctic Peninsula

Icebergs and brash ice reflected in calm waters on the west side of the Antarctic peninsula, Antarctica.