Gentoo Linux Reference Libraries
The Gentoo Penguin (Pygoscelis papua) is easily identifiable by the wide white stripe extending like a bonnet across the top of its head. Chicks have grey backs with white fronts. Adult Gentoos reach a height of 75 to 90 cm. They are considered to be the fastest underwater swimming penguins and can reach speeds of up to 36 km/h. Two sub-species of this penguin are recognized Pygoscelis...
- Having no light.
- Of or relating to the region of a body of water that is not reached by sunlight and in which photosynthesis is unable to occur.