Researchers from British Antarctic Survey (BAS) have carried out aerial surveys of the remote volcanic Zavodovski Island in the sub-Antarctic to count the largest penguin colony in the world.
The South Sandwich Islands, in the far southern Atlantic Ocean, are often shrouded with thick cloud, making it difficult to view the region from space. Sometimes, however, the use of false-color imagery can be used to reveal events that would otherwise be obscured under cloud cover.