Adult Adelie penguin (Pygoscelis adeliae) leaping from the sea onto ice floes near Heroina Island in the Weddell Sea, Antarctica. This penguin species is totally dependant on ice.

Adult emperor penguin pair (Aptenodytes forsteri) resting on ice floe with three Adelie penguins (Pygoscelis adeliae) nearby below the Antarctic circle on the western side of the Antarctic Peninsula. These are individuals that have hauled out, possibly to

An adult Adelie penguin (Pygoscelis adeliae) leaping into the sea to forage in the Danger Island Group in the Weddell Sea, Antarctica.

A lone adult Adelie penguin (Pygoscelis adeliae) on an iceberg off Petermann Island, Antarctica.

Adelie penguins (Pygoscelis adeliae) marching down the beach and preparing to enter the ocean as a tight group (for safety) on Paulet Island, Antarctic Peninsula. Adelie penguins are truly an ice dependant penguin species.

Adult Adelie penguin (Pygoscelis adeliae) pair returning from the sea to feed their chicks on Paulet Island on the Northeast side of the Antarctic Peninsula.

Two adult Adelie penguins (Pygoscelis adeliae) "porpoising" for speed in the Weddell Sea on the Northeast side of the Antarctic Peninsula.

Adult Adelie penguins (Pygoscelis adeliae) lining up to leap off of an iceberg at Paulet Island in the Weddell Sea.

A lone adult Adelie penguin (Pygoscelis adeliae) among two gentoo penguins on an iceberg off Port Lockroy, Antarctica. There are an estimated 2 million breeding pairs of chinstrap penguins in the Antarctic peninsula region alone, perhaps as many as 7. 5 m

A banded Adult Adelie penguin (Pygoscelis adeliae) resting among gentoo and chinstrap colonies on Barrentos Island in the Aitcho Island Group, South Shetland Islands, Antarctica. Note the flipper band on the left wing.

A banded adult Adelie penguin (Pygoscelis adeliae) watches as a gentoo penguin approaches an ice cornice on Barrentos Island in the Aitcho Island Group, South Shetland Islands, Antarctica.

Adult gentoo penguins (Pygoscelis papua) jumping from an ice covered island at Mikkelsen Point on Trinity Island in the northern portion of the Gerlache Strait, Antarctica. Southern Ocean. There are an estimated 80, 000 breeding gentoo penguin pairs in the

An adult Adelie penguin (Pygoscelis adeliae) pair leaping into the sea from an ice floe in the Weddell Sea, Antarctica.