From the iconic emperor penguin to the Magellanic penguin, these striking photos capture the beauty of the aquatic birds.

Millions more Adélie penguins may be marching across Antarctica than earlier counts suggested. Nearly six million of the tuxedoed penguins may live in East Antarctica, more than double the ...

Their day coincides with the annual northern migration of Adélie penguins, which starts each year around April 25. This celebration was created at McMurdo Station, an American research center on ...