In the Antarctic summer, there are so many of these krill that they turn the waters orange.

At the beginning of Antarctic summer, the breeding ground is only a few hundred meters away from the open water where the penguins can feed.

During the Antarctic summer, daylight lasts for 24 hours.

The station is only used in Antarctic summer.

The remaining bases are manned only during the Antarctic summer.

A century later, the Antarctic summer of 2011-12 will be a bumper one for visits to the frozen continent.

The runway only operates during the Antarctic summer, and twenty to thirty flights per season are planned.

Much of the heavy work is done outdoors, where temperatures are often 30 degrees below zero even during the Antarctic summer.

As the Antarctic summer continues, the fast ice will break away from the coast and drift out to sea.

The Antarctic summer causes the pack ice to break up.