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Most of these sounds were measured at more than 21 kHz, which is beyond the range of human hearing of 20 to 20,000 hertz. A particular high-pitched whistle came in at 49.8 kHz.
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A large chunk of iceberg in the Antarctic, twice the size of New York City, is due to break away any time soon.
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This unique expedition is investigating the ice shelves around the Weddell Sea and documenting the rich and little-studie
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New research has found that Antarctic krill would be largely unaffected by the higher levels of ocean acidification predicted for the next 100 to 300 years.
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As a result of climate change, the sea ice in west Antarctica will melt and this is expected to cause the sea level to rise by up to 3.2 metres.
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One such hotspot can be found near some Adélie penguin breeding colonies along the western Antarctic Peninsula, off Anvers Island.
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They would be oblivious to the fact that on 28 October 2016, their home was declared a marine protected area (MPA), which meant that no commercial fishing activity would be conducted within its waters.
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Rising temperature of the ocean west of the Antarctic Peninsula - one of the most rapidly warming places on the planet - should make it possible for king crab populations to move to the shallow continental shelf from their current deep-sea habitat
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If the hypothesis turns out to be true, it would represent the first evidence of such a trait in a marine mammal.
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Analysis of the samples taken from subglacial Lake Whillans, the researchers indicate, show that the water contains a diverse microbial community, many members of which can mine rocks for energy and use carbon dioxide as their source of carbon.
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With melting ice increasing due to rising global temperatures, penguins are on the frontline of climate change. Scientists are finding penguins are beginning to feel major impacts from the drastic habitat changes.
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Researchers from British Antarctic Survey found that although female whales have crossed from one hemisphere to another at certain times in the last few thousand years, they generally stay in their ocean of birth.
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Hot steaming rainforests had been replaced with ice palaces and blue green glaciers; kangaroos and cassowaries had been substituted with penguins and seals; and my beloved shorts and singlet had been passed up for down jackets, heavy-duty waterpro
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According to common belief, at least up to now, humpback whales migrate to Antarctic waters only in the austral summer months.
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Leopard seals (Hydrurga leptonyx) are unusual among apex predators in that they feed at both the top and near the bottom of marine food webs; they capture and consume marine amniotes (seals and penguins) as well as krill.
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South Georgia has an interesting historical heritage. It is a whale sanctuary and a cemetery.
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