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Antarctic fish fit these criteria with modifications in swim bladders, development of AFGPs, loss of HSPs and modifications in oxygen transport while inhabiting the same geographic area. Antarctic fish speciation coincides with the separation of Antarctica from Gondwana, a continent composed of Antarctica, Australia, South America and Africa.
Around 98% of continental Antarctica is covered in ice up to 4.7 kilometres (2.9 mi) thick. [1] Antarctica's icy deserts have extremely low temperatures, high solar radiation, and extreme dryness. [2] Any precipitation that does fall usually falls as snow, and is restricted to a band around 300 kilometres (186 mi) from the coast.
The ocellated icefish (Chionodraco rastrospinosus) is a fish of the family Channichthyidae. [3] [4] It lives in the cold waters off Antarctica and is known for having transparent haemoglobin-free blood. [5] [6] C. rastrospinosus live in the Southern Ocean up to a depth of 1 km. They are most commonly found on the seabed at 200–400 m.
In February 2021, scientists discovered and documented a breeding colony of Neopagetopsis ionah icefish estimated to have 60 million active nests across an area of approximately 92 square miles at the bottom of the Weddell Sea in Antarctica. [6] The majority of nests were occupied by one adult fish guarding an average of 1,735 eggs in each nest ...
Lake Vostok (Russian: озеро Восток, romanized: ozero Vostok) is the largest of Antarctica's 675 known [3] subglacial lakes.Lake Vostok is located at the southern Pole of Cold, beneath Russia's Vostok Station under the surface of the central East Antarctic Ice Sheet, which is at 3,488 m (11,444 ft) above mean sea level.
A half-mile of ice isn't enough to suffocate life. A team of scientists who drilled into one of Antarctica's subglacial lakes last year says the lake is pretty well-packed with living things. The ...
A sea-level rise of 3.3 m (10 ft 10 in) would occur if the ice sheet collapses, leaving ice caps on the mountains, and 4.3 m (14 ft 1 in) if those ice caps also melt. [101] Isostatic rebound may contribute an additional 1 m (3 ft 3 in) to global sea levels over another 1,000 years. [ 100 ]
The loss of this ice sheet would take between 2,000 and 13,000 years, [39] [40] although several centuries of high greenhouse emissions could shorten this time to 500 years. [41] A sea-level rise of 3.3 m (10 ft 10 in) would occur if the ice sheet collapses, leaving ice caps on the mountains, and 4.3 m (14 ft 1 in) if those ice caps also melt. [42]