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Antarctic krill (Euphausia superba) is a species of krill found in the Antarctic waters of the Southern Ocean. It is a small, swimming crustacean that lives in large schools, called swarms , sometimes reaching densities of 10,000–30,000 animals per cubic metre. [ 3 ]
Krill also release faecal pellets (3) whilst they feed, which can sink to the deep sea but can be consumed (coprophagy) and degraded as they descend (4) by krill, bacteria and zooplankton. In the marginal ice zone, faecal pellet flux can reach greater depths (5). Krill also release moults, which sink and contribute to the carbon flux (6).
They eat 4 to 6 tons of krill a day. As an adult, they can grow up to a 110 ft (33 m) and weigh up to 180 tons. I find it so interesting that throughout history, earth has been home to some of the ...
The total global harvest of krill from all fisheries amounts to 150–200,000 tonnes annually, mainly Antarctic krill and North Pacific krill (E. pacifica). Krill are rich in protein (40% or more of dry weight) and lipids (about 20% in E. superba). Their exoskeleton amounts to some 2% of dry weight of chitin.
Antarctic krill had an average iron level of 174.3mg/kg dry weight, but the iron in the krill varied from 12 to 174 mg/kg dry weight. [59] The average iron concentration of the muscular tissue of blue whales and fin whales was 173 mg/kg dry weight, which demonstrates that the large marine mammals are important to marine ecosystems such as they ...
Despite having first been recorded by Captain Cook in the late 1790s, the first emperor penguin colony wasn’t discovered until 1902. Because they dwell in such extreme southern climes that are ...
The crabeater seal (Lobodon carcinophaga), also known as the krill-eater seal, ... During summer, males typically weigh 200 kilograms (440 lb), and females 215 ...
A group of friends exploring the waters off La Jolla Cove on Saturday came across a sea creature unlike anything they'd ever seen: a 12-foot-long rare fish from the depths of the ocean.