Sorry, we couldn't find any results!
Please try a different filter above.
The lowly krill averages only about two inches (five centimeters) in length, but it represents a giant-sized link in the global food chain. These small, shrimp-like crustaceans are essentially the fuel that runs the engine of the Earth’s marine ecosystems.
Krill feed on phytoplankton, microscopic, single-celled plants that drift near the ocean’s surface and live off carbon dioxide and the sun’s rays. They in turn are the main staple in the diets of literally hundreds of different animals, from fish, to birds, to baleen whales.
Simply put, without krill, most of the life forms in the Antarctic would disappear.
Average life span in the wild: 5 years or more
Size: 2.4 in (6 cm)
Weight: 0.035 oz (1 g)
Group name: Swarm
Did you know? Scientists estimate that the total weight of all the Antarctic krill is more than the total weight of all humans on Earth.
Never miss a Nat Geo moment
Join our curious community and you'll have access to some great features!
Personalised content reflecting your interests on the site
Watch exclusive videos before anyone else
Favourite content that you like or want to check out later
Free SMS and Email reminders so you never miss a show
Get notified when content that interests you is published
Share your photos on Snap! that could appear on TV
Share your thoughts and opinions on various matters
Receive a monthly newsletter with loads of great content