Krill is small marine crustacean which looks something like a shrimp sort of thing. Krill are small invertebrates, and are found all over the world’s ocean. Without Krill the marine world would be a disaster. Small fish feed of Krill to keep themselves alive and then the big fish eat those fish etc. etc. In my opinion Krill is pretty much the life base of many of the animals in the sea.
Krill tends to travel in large groups together making gigantic wave shapes like birds flying through the sky. They look like a brown sort of mass and are quite amazing to watch.
Krill eat small plankton such as phytoplankton which is good as they are at the plenty.
Reference: http://www.antarctica.gov.au/about-antarctica/wildlife/animals/krill
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