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منذ 2 أيام نشر في ٢٠٢٥/١٢/٢٠ م

This mysterious shark is not often seen by cameras: The first photograph of a live Greenland shark wasn’t taken until 1995.

Some have speculated that Greenland shark sightings could be behind the Loch Ness monster myth.

A Greenland shark was spotted off the coast of Belize in spring 2022, raising the possibility the sharks are more widespread than previously thought.

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Jawad

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منذ 3 أيام نشر في ٢٠٢٥/١٢/١٩ م

Humans do pose a threat to Greenland sharks: The International Union for the Conservation of Nature lists the Greenland shark as vulnerable to extinction. The animal’s slow growth rate, late maturity, and low reproduction rate make it vulnerable to threats such as fishing, pollution, and climate change. Until the 1960s they were hunted for the oil in their livers, which was used as industrial lubricant or for lamp oil.

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منذ 4 أيام نشر في ٢٠٢٥/١٢/١٨ م

There’s no proof of Greenland sharks attacking humans: An 1859 report of a Greenland shark found with a human leg in its stomach was never corroborated. However, the animal’s flesh is poisonous; eating it can cause diarrhea, vomiting, stumbling, and convulsions, also known as getting “shark drunk.”

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منذ 5 أيام نشر في ٢٠٢٥/١٢/١٧ م

Arctic Greenland sharks often have poor vision because of a parasite called Ommatokoita elongata. This tiny crustacean latches onto the shark’s eye, damaging the cornea and leaving scar tissue with each infection. The shark is not debilitated by its blindness as it relies heavily on other senses in its dark habitat far beneath the ice.

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منذ 6 أيام نشر في ٢٠٢٥/١٢/١٦ م

Greenland sharks are not fussy eaters and consume a variety of fish, squid, and carrion. Stomach contents of sharks have even included polar bears, horses, and reindeer. Evidence suggests they may be opportunistic hunters capable of ambushing seals in stealth attacks. They have been linked to the discovery of nearly 5,000 mutilated seal corpses in Nova Scotia between 1993 and 2001: The victims’ pelts were ripped off in a spiral shape—like a peeled orange—giving the shark the gruesome.

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منذ 7 أيام نشر في ٢٠٢٥/١٢/١٥ م

Greenland sharks have narrow, pointed upper teeth and broader, squared teeth on the lower jaw. Holding large prey in position with their upper teeth, they roll their head in a circular motion, using the lower teeth like a blade to tear off circular chunks of flesh. Smaller prey is eaten whole.

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منذ 1 أسابيع نشر في ٢٠٢٥/١٢/١٣ م

Dark gray, brown, or black with a cylinder-shaped body, small eyes, rounded snout, and no anal fin, Greenland sharks resemble a submarine and can reach 23 feet long and may weigh 1.5 tons. In comparison, the great white shark grows to 15 to 20 feet but is significantly heavier, weighing 2.5 tons or more.

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منذ 1 أسابيع نشر في ٢٠٢٥/١٢/١٢ م

Specially adapted for cold water, this shark’s tissues contain high levels of chemical compounds that act like anti-freeze and prevent ice crystals forming in the body. These sharks conserve energy by swimming very slowly—about 1.12 feet per second—but can exhibit short bursts of speed to ambush prey.

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Jawad

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/١١ م

The largest fish in the Arctic Ocean—and the only shark found there year-round—the Greenland shark also inhabits the North Atlantic and Russian high Arctic. Infrequently observed at the surface, it can live in waters 7,200 feet deep and between 28.4 to 44.6 Fahrenheit (minus 2 to 7 degrees Celsius).

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Jawad

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/١٠ م

Measuring the Greenland shark’s growth rate is challenging because individuals are rarely recaptured. However, one shark tagged in 1936 had only grown 2.3 inches when it reappeared 16 years later.

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Jawad

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/٠٩ م

scientists discovered Greenland sharks have a life expectancy of at least 272 years and could reach 392, give or take about 120 years. What’s more, these slow-growing creatures don’t reach reproductive age until around 150 years old.

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/٠٨ م

Many shark species can be aged by counting growth bands on their vertebrae, like rings on a tree. The Greenland shark’s soft vertebrae do not have these bands, however. Instead, its age is determined by removing the layers of the lens of its eye—which continues growing throughout its lifetime—and radiocarbon dating the tissue in the center.

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Jawad

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/٠٦ م

Despite its name, the Greenland shark is not only found in Greenland; it has been spotted as far away as the western Caribbean. Also known as the gray, ground, gurry, or sleeper shark, this animal lives in incredibly cold, deep waters, so it is much less studied than many of the more than 500 other shark species. It is one of the slowest sharks, too: Its scientific name, Somniosus microcephalus, roughly translates to “sleepy small-head.” Yet these rare animals may be a top predator.

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Jawad

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منذ 2 أسابيع نشر في ٢٠٢٥/١٢/٠٥ م

The Greenland shark is the world’s longest living vertebrate. It can live for 400 years—twice the age of the longest-living land animal, the giant tortoise. There could be an individual in the ocean today that was alive during the 1665 Great Plague of London and George Washington’s presidential inauguration in 1789.

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منذ 3 أسابيع نشر في ٢٠٢٥/١٢/٠٤ م

Like other deer (family Cervidae), moose have cloven hooves, and are therefore in the mammalian order Artiodactyla. Moose are the largest animals in the deer family, weighing as much as 1,750 lb (800 kg) and standing as tall as about 6.6 ft (2 m). The largest moose occur in Alaska (Alces alces gigas ).

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Jawad

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منذ 3 أسابيع نشر في ٢٠٢٥/١٢/٠٣ م

The moose (Alces alces), also known as elk in Europe , is a horse-sized, northern species of deer that occurs in the boreal and north-temperate forests of both North America and Eurasia. At one time, the Eurasian and American moose were considered to be separate species, but these animals are fully interfertile and are now thought to be the same species. However, there are many geographically distinct subspecies of these animals.

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منذ 3 أسابيع نشر في ٢٠٢٥/١٢/٠٢ م

If moose also occur in places where white-tailed deer are abundant, they may suffer from a debilitating nematode parasite known as brainworm (Parelaphostrongylus tenuis ). The deer population is resistant to this parasite, but the brainworm is abundant where the deer are common, and the moose population consequently suffers.

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Jawad

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منذ 3 أسابيع نشر في ٢٠٢٥/١٢/٠١ م

In some regions of eastern North America, white-tailed deer (Odocoileus virginianus ) have become quite abundant. This has largely happened because of human activities that create favorable habitat for the white-tailed deer, such as some types of forestry and the abandonment of agricultural lands.

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منذ 3 أسابيع نشر في ٢٠٢٥/١١/٢٩ م

Moose are hunted throughout their range, both for sport and as a source of wild meat and tough hides. Until rather recently, moose were overhunted throughout much of their range, and their populations were reduced to low levels. Now, however, the hunting of most moose populations is regulated, and their abundance is somewhat higher.

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منذ 3 أسابيع نشر في ٢٠٢٥/١١/٢٨ م

Moose diets are generally low in sodium, and these animals therefore crave salt. As a result, moose (and other deer) are sometimes seen along roadsides, eating vegetation that is relatively rich in sodium because of the use of road salt in winter.

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منذ 4 أسابيع نشر في ٢٠٢٥/١١/٢٧ م

The long legs of moose make it easy for them to feed relatively easily in the canopy of shrubs and trees. However, this trait, in combination with their short neck, makes it difficult for these animals to feed on lower-growing, herbaceous vegetation. Therefore, when grazing on grasses and forbs, moose often must kneel rather awkwardly.

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منذ 4 أسابيع نشر في ٢٠٢٥/١١/٢٦ م

During the summer, individual moose can be approached rather closely (and carefully) by canoe, and can be taken totally by wide-eyed surprise when they lift their heads above water again, subsequently running away with enormous splashes.

The upper lip of the moose is unusually large and prehensile, and is adapted to feeding on woody plants.

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Jawad

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منذ 4 أسابيع نشر في ٢٠٢٥/١١/٢٢ م

Moose feed on a wide variety of plants, and their diet varies seasonally. Most of the year moose feed by browsing on the young shoots and foliage of woody shrubs and short trees. During the summer these animals prefer to eat herbaceous vegetation, including aquatic plants, which they seek while standing in the water, often feeding beneath the surface.

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Jawad

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منذ 1 شهور نشر في ٢٠٢٥/١١/٢١ م

Moose calves are born one or two at a time, and they are precocious, meaning they are capable of standing and moving about with their mother soon after birth. The calves nurse for up to a year, and moose can live for as many as 25 years. Moose are not very social animals, mostly coming together only for the purposes of breeding. In some regions with deep snow in the winter, moose may aggregate in dense stands of conifer trees, known as yards.

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