Brent Stephenson / Gentoo Penguin (Pygoscelis papua) with two large chicks. The chicks are begging to be fed by the adult. Petermann Island, Antarctic Peninsula, Antarctica, January.

Charlie Summers / Adelie penguin (Pygoscelis adeliae) hopping from ice block to ice block, Petermann Island, Antarctica

Andy Rouse / Adelie penguins (Pygoscelis adeliae) adult with chicks, Petermann Island, Antarctica (non-ex)

Andy Rouse / Adelie penguin (Pygoscelis adeliae) adult looking curious, Petermann Island, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) nesting colony on granite outcrop, Petermann Island, Antarctica

Peter Bassett / Green snow algae. Petermann Island, Antarctic Penninsula, Antarctica

David Tipling / Gentoo Penguin, (Pygoscelis papua) feeding chick silhouetted at sunset, Petermann Island, Antarctica

Brent Stephenson / Weddell Seal (Leptonychotes weddellii) hauling out onto rocks. Petermann Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Gentoo Penguin (Pygoscelis papua) feeding a chick at its nest. Petermann Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Gentoo Penguin (Pygoscelis papua) feeding a chick at its nest. Petermann Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Gentoo Penguin (Pygoscelis papua) with two large chicks. The chicks are begging to be fed by the adult. Petermann Island, Antarctic Peninsula, Antarctica, January.

Brent Stephenson / Antarctic Shag (Leucocarbo / Phalacrocorax [atriceps] bransfieldensis) (also known as blue-eyed shag) swiming in clear water. Petermann Island, Antarctic Peninsula, Antarctica, January.

Charlie Summers / Adelie Penguin (Pygoscelis adeliae) tidies up around its nest and in doing so exposes its brood patch and one of its two eggs. Petermann Island, Antarctica, November

Charlie Summers / Adelie Penguin (Pygoscelis adeliae) bringing rock to its nest, Petermann Island, Antarctica

Charlie Summers / Adelie Penguin (Pygoscelis adeliae) with Krill stains on its white front, searching for small rocks to add to its nest. Petermann Island, Antarctica.

Charlie Summers / Gentoo Penguin (Pygoscelis papua) re-arranging rocks at its nest, Petermann Island, Antarctica, November

Suzi Eszterhas / Weddell Seal (Leptonychotes weddellii) sleeping on ice, Petermann Island, Antarctic Peninsula

Colin Monteath / Kayakers paddling beneath Mount Scott at entrance to Lemaire Channel near Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Kayakers paddling beneath Mount Scott at entrance to Lemaire Channel near Petermann Island, Antarctic Peninsula, Antarctica

Charlie Summers / Adelie penguin (Pygoscelis adeliae) tracks in the snow, Petermann Island, Antarctica

Charlie Summers / Adelie penguin (Pygoscelis adeliae) adult stretching, at coastal nest site, with down-covered chick, Petermann Island, Antarctica

Suzi Eszterhas / Weddell Seal (Leptonychotes weddellii) calling on iceberg, Petermann Island, Antarctic Peninsula, Antarctica

Konrad Wothe / Gentoo Penguin (Pygoscelis papua) tobogganing, Petermann Island, Antarctica

Hiroya Minakuchi / Gentoo Penguin (Pygoscelis papua) nesting colony, Peterman Island, Antarctica

Andy Rouse / Adelie penguin (Pygoscelis adeliae) adult tobogganing on snow, Petermann Island, Antarctica

Suzi Eszterhas / Gentoo Penguin (Pygoscelis papua) colony at sunset, Petermann Island, Antarctica

Suzi Eszterhas / Gentoo Penguin (Pygoscelis papua) colony at sunset, Petermann Island, Antarctica

Suzi Eszterhas / Gentoo Penguin (Pygoscelis papua) colony at sunset, Petermann Island, Antarctica

Suzi Eszterhas / Gentoo Penguin (Pygoscelis papua) colony at sunset, Petermann Island, Antarctica

Theo Allofs / Gentoo Penguin (Pygoscelis papua) preening itself, Peterman Island, Antarctic Peninsula, Antarctica

Suzi Eszterhas / Gentoo Penguin (Pygoscelis papua) colony at sunset, Petermann Island, Antarctica

Peter Bassett / Red and green snow algae, Petermann Island, Antarctica

Peter Bassett / Red and green snow algae, Petermann Island, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) nesting colony on snow-free granite outcrop, Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Iceberg with arch, Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Icebergs near Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group observed by tourist, Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group on Petermann Island, Antarctica Peninsula, Antarctica

Colin Monteath / Adelie Penguin (Pygoscelis adeliae) group on Petermann Island, Antarctica Peninsula, Antarctica

Colin Monteath / Icicles hanging from iceberg, Petermann Island, Antarctic Peninsula, Antarctica

Tui De Roy / Gentoo Penguin (Pygoscelis papua) nesting colony on granite outcrop, Petermann Island, Antarctic Peninsula, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) rookery, Petermann Island, Antarctic Peninsula, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) incubating adult snowed in on nest, Petermann Island, Antarctica

Tui De Roy / Crabeater Seal (Lobodon carcinophagus) group hauled out on ice floe, Peterman Island, Antarctica Peninsula, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) pair engage in greeting display with large chicks, Petermann Island, Antarctica Peninsula, Antarctica

Tui De Roy / Adelie Penguin (Pygoscelis adeliae) displaying parent with chicks, Petermann Island, Antarctica

Tui De Roy / Giant rocky outcrop, Petermann Island, Antarctica Peninsula, Antarctica

Jan Vermeer / Adelie Penguin (Pygoscelis adeliae) with wings spread, Peterman Island, Antarctica

Jan Vermeer / Adelie Penguin (Pygoscelis adeliae) with wings spread, Peterman Island, Antarctica

Colin Monteath / Undercut iceberg, Petermann Island, Antarctic Peninsula, Antarctica

Colin Monteath / Iceberg with arch, Petermann Island, Antarctic Peninsula, Antarctica