A hydromedusa spreads its luminescent tentacles in the Weddell Sea near Antarctica. (via nationalgeographic)
In this undated photo released by the University of Alaska Fairbanks, Census of Marine Life, is shown a ghost-like sea-angel, platybrachium antarcticum, going through the deep Antarctic waters hunting the shelled pteropods (another type of snail) on which it feeds. (via Recent Scenes from Antarctica - Alan Taylor)
A cruise ship passes by islands along the Antarctic Peninsula on January 22, 2010. (via Recent Scenes from Antarctica - Alan Taylor)
Amundsen-Scott South Pole Station experiences months of darkness. The sun dips below the horizon on March 21, after which follows several weeks of twilight before complete darkness results. Photo taken on June 25, 2009. (via Recent Scenes from Antarctica - Alan Taylor)
It may be hard to believe, but Antarctica was once covered in towering forests.