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About Krill
Krill (Euphausia superba), are small and shrimp-like species which belongs to the members of the class Crustacea. These krill are primarily found in cold waters of Arctic and Antarctic waters and are also harvested from there. These species are planktonic and they feed on rich algae and zooplankton. They grow up to a size of 25mm and are found normally in North America. These krill are planktonic and likes to feed on algae and zooplankton. Krill spends their most of the day time in the cold depths of Antarctic Ocean and in nights they come to shallow surface in search of food. They can live up to 10 years of age. These species play a very important role in the global food chain. These small, shrimp-like crustaceans are in actual fact "the fuel" that is responsible for running the engine of the Earth's marine ecosystems. They are responsible for the diets of hundreds of different sea animals, right from fish, to birds, to the baleen whales. If krill disappears most of the life forms from the Antarctic will disappear. And, this incident may occur soon as the recent studies show that Antarctic krill number may have dropped by 80 percent since the 1970s. According to the scientists, due to global warming the ice is melting and the primary food source, i.e., ice-algae are not easily available to these krill. Pink and opaque krill are among the largest of the 85 known species of krill. Their numbers ranges from 125 million tons to 6 billion tons. These krill congregate in swarms sometimes in a year and are so dense that they can be seen from space.

Krill Varieties
There are many varieties of krill which lives in Arctic and Antarctic Ocean. The krill varieties are as follows :

  • North Pacific Krill: These grow up to a size of 2 cm. They are found in the northern hemisphere like Japan and America.
  • Antarctic Krill: This is one of the largest varieties found in Antarctic ecosystems. These species also grow up to 2cm.
  • Northern Krill: They grow up to 3 cm in length and are very similar to north pacific krill. They are found in the north Atlantic and live in shallow water.
  • Deep Sea Krill: This is a rarely found species, which lives at the depth of 3300 feet. They are different from other species like they have underdeveloped eyes and also lack of bioluminescence.

Krill Oil
As the name suggests the krill oil are made from the species known as krill. It is an important source of nutrients. The three most important nutrients found in the krill are namely omega-3 fatty acids (similar to those of fish oil), omega-3 fatty acids (which is attached to phospholipids) and astaxanthin (an antioxidant). A recent study conducted on krill oil in the University of Montreal shows that this krill oil can reduce dysmenorrheal (a gynecological medical condition described by severe uterine pain during menstruation) and the emotional symptoms of premenstrual syndrome.

Benefits of Krill Oil

  • It is a natural remedy for high cholesterol
  • It reduces the symptoms of premenstrual syndrome (PMS)
  • It is also helpful in reducing arthritis syndrome and inflammation

Krill Oils Danger
The side effects of krill oil may include diarrhea, loose stools or indigestion. People who are allergic to seafood should not use this krill oil. As well as, a person who has bleeding disorders should not use krill oil.