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[[File:AmundsenSea-map.jpg|thumb|300px|left]]
[[File:Antarctic krill.jpg |250px|left]]
The '''Amundsen Sea''', an arm of the [[Southern Ocean]] off of [[Westarctica]] in western [[Antarctica]], lies between [[Cape Flying Fish]] (the northwestern tip of [[Thurston Island]]) to the east and [[Cape Dart]] on [[Siple Island]] to the west. Cape Flying Fish marks the boundary between the Amundsen Sea and the [[Bellingshausen Sea]]. West of Cape Dart there is an unnamed "marginal sea" of the Southern Ocean between the Amundsen and [[Ross Sea]]s. The Norwegian expedition of 1928–1929 under Captain Nils Larsen named the body of water for the Norwegian polar explorer [[Roald Amundsen]] while exploring this area in February 1929.
'''[[Antarctic krill]]''' is a species of [[krill]] found in the [[Antarctica|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 individual animals per cubic meter. It feeds directly on minute phytoplankton, thereby using the primary production energy that the phytoplankton originally derived from the sun in order to sustain their open ocean life cycle.


The sea is mostly ice-covered, and the [[Thwaites Ice Tongue]] protrudes into it. The [[ice sheet]] which drains into the Amundsen Sea averages about 3 km (1.9 mi) in thickness; roughly the size of the state of Texas, this area is known as the Amundsen Sea Embayment (ASE); it forms one of the three major ice-drainage basins of the [[West Antarctic Ice Sheet]].
It grows to a length of 6 cm, weighs up to 2 grams, and can live for up to six years. It is a key species in the Antarctic ecosystem and is, in terms of biomass, probably the most abundant animal species on the planet. In 2019, the Antarctic krill was featured on a [[Stamps of Westarctica|stamp of Westarctica]] to celebrate its role as a vital part of the Antarctic ecosystem.


It is Westarctica's largest sea. '''([[Amundsen Sea|Full Article...]])'''
'''([[Antarctic krill|Full Article...]])'''

Latest revision as of 22:23, 1 January 2026

Antarctic krill.jpg

Antarctic krill 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 individual animals per cubic meter. It feeds directly on minute phytoplankton, thereby using the primary production energy that the phytoplankton originally derived from the sun in order to sustain their open ocean life cycle.

It grows to a length of 6 cm, weighs up to 2 grams, and can live for up to six years. It is a key species in the Antarctic ecosystem and is, in terms of biomass, probably the most abundant animal species on the planet. In 2019, the Antarctic krill was featured on a stamp of Westarctica to celebrate its role as a vital part of the Antarctic ecosystem.

(Full Article...)