Penguins dive into Antarctic sea

Penguins dive into Antarctic sea

ANTARCTICA, Antarctica - Adelie penguins dive into water near the Japanese icebreaker Shirase in Antarctica on Dec. 15, 2009. The appearance of around 50 penguins excited those aboard, including members of a research expedition team, as they arrived in the waters, 70 kilometers from Japan's Showa Station, after a 17-day voyage from a port in Australia. (Pool photo)

March of penguins in Antarctica

March of penguins in Antarctica

ANTARCTICA, Antarctica - Adelie penguins slide on sea ice near the Japanese icebreaker Shirase in Antarctica on Dec. 15, 2009. The appearance of around 50 penguins excited those aboard, including members of a research expedition team, as they arrived in the waters, 70 kilometers from Japan's Showa Station, after a 17-day voyage from a port in Australia. (Pool photo by Kyodo)

Penguins cozy up in Antarctica

Penguins cozy up in Antarctica

ANTARCTICA, Antarctica - An emperor penguin and an Adelie penguin cozy up on sea ice 70 kilometers from Japan's Showa Station in Antarctica on Dec. 15, 2009. The appearance of the bigger penguin among around 50 Adelie penguins excited members of a research expedition team and others aboard the Japanese icebreaker Shirase, which left a port in Australia on Nov. 29. (Pool photo by Kyodo)

March of penguins in Antarctica

March of penguins in Antarctica

ANTARCTICA, Antarctica - Adelie penguins slide on sea ice near the Japanese icebreaker Shirase in Antarctica on Dec. 15, 2009. The appearance of around 50 penguins excited those aboard, including members of a research expedition team, as they arrived in the waters, 70 kilometers from Japan's Showa Station, after a 17-day voyage from a port in Australia. (Pool photo by Kyodo)(Kyodo)

Penguins cozy up in Antarctica

Penguins cozy up in Antarctica

ANTARCTICA, Antarctica - An emperor penguin and an Adelie penguin cozy up on sea ice 70 kilometers from Japan's Showa Station in Antarctica on Dec. 15, 2009. The appearance of the bigger penguin among around 50 Adelie penguins excited members of a research expedition team and others aboard the Japanese icebreaker Shirase, which left a port in Australia on Nov. 29. (Pool photo by Kyodo)(Kyodo)

Penguins dive into Antarctic sea

Penguins dive into Antarctic sea

ANTARCTICA, Antarctica - Adelie penguins dive into water near the Japanese icebreaker Shirase in Antarctica on Dec. 15, 2009. The appearance of around 50 penguins excited those aboard, including members of a research expedition team, as they arrived in the waters, 70 kilometers from Japan's Showa Station, after a 17-day voyage from a port in Australia. (Pool photo by Kyodo)(Kyodo)