Polar Bear
https://en.wikipedia.org/wiki/Polar_bear
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. The polar bear is one of eight extant species in the bear family, Ursidae, and of six extant species in the subfamily Ursinae. It was known as the "white bear" in Europe between the 13th and 18th centuries, as well as "ice bear", "sea bear" and "Greenland bear". The Norse referred to it as isbjørn 'ice bear' and hvitebjørn 'white bear'. The bear is called nanook by the Inuit. The Netsilik cultures additionally have different names for bears based on certain factors, such as sex and age: these include adult males (anguraq), single adult females (tattaq), gestating females (arnaluk), newborns (hagliaqtug), large adolescents (namiaq) and dormant bears (apitiliit). The scientific name Ursus maritimus is Latin for 'sea bear'. It is closely related to the brown bear, and the two species can interbreed. The polar bear is the largest extant species of bear and land carnivore. Polar bears are both terrestrial and pagophilic (ice-living) and are considered to be marine mammals due to their dependence on marine ecosystems. They prefer the annual sea ice but live on land when the ice melts in the summer. Polar bears are usually solitary but can be found in groups when on land.
Distribution
The polar bear is a large bear native to the Arctic and nearby areas. Polar bears inhabit the Arctic and adjacent areas. Their range includes Greenland, Canada, Alaska, Russia and the Svalbard Archipelago of Norway. Polar bears have been recorded as close as 25 km (16 mi) from the North Pole. The southern limits of their range include James Bay and Newfoundland and Labrador in Canada and St. Matthew Island and the Pribilof Islands of Alaska. They are not permanent residents of Iceland but have been recorded visiting there if they can reach it via sea ice. Polar bears may travel areas as small as 3,500 km2 (1,400 sq mi) to as large as 38,000 km2(15,000 sq mi) in a year, while drifting ice allows them to move further. Depending on ice conditions, a bear can travel an average of 12 km (7.5 mi) per day. These movements are powered by their energy-rich diet. Polar bears move by walking and galloping but do not trot. Walking bears tilt their front paws towards each other. They can run at estimated speeds of up to 40 km/h (25 mph) but typically move at around 5.5 km/h (3.4 mph). Polar bears are also capable swimmers and can swim at up to 6 km/h (3.7 mph) One study found they can swim for an average of 3.4 days at a time and travel an average of 154.2 km (95.8 miles). They can dive for as long as three minutes. When swimming, the broad front paws do the paddling, while the hind legs play a role in steering and diving.
Habitat
Polar bears are both terrestrial and pagophilic (ice-living) and are considered to be marine mammals due to their dependence on marine ecosystems. They prefer the annual sea ice but live on land when the ice melts in the summer.
Description
The polar bear is white- or yellowish-furred with black skin and a thick layer of fat. The coat consists of dense underfur around 5 cm (2.0 in) long and guard hairs around 15 cm (5.9 in) long. Males have long hairs on their forelegs, which is thought to signal their fitness to females. The outer surface of the hairs has a scaly appearance, and the guard hairs are hollow, which allows the animals to trap heat and float in the water. It is more slender than the brown bear, with a narrower skull, longer neck and lower shoulder hump. Its teeth are sharper and more adapted to cutting meat. The paws are large and allow the bear to walk on ice and paddle in the water. The polar bear is the largest living species of bear and land carnivore. Male polar bears also have proportionally larger heads than females. The weight of polar bears fluctuates during the year, as they can bulk up on fat and increase their mass by 50 percent. A fattened, pregnant female can weigh as much as 500 kg (1,100 lbs.). Adults may stand 130–160 cm (4.3–5.2 ft) tall at the shoulder. The tail is 76–126 mm (3.0–5.0 in) long. The largest polar bear on record, reportedly weighing 1,002 kg (2,209 lb), was a male shot at Kotzebue Sound in northwestern Alaska in 1960. This species has a more slender build, with a narrower, flatter and smaller skull, a longer neck, and a lower shoulder hump. The snout profile is curved, resembling a "Roman nose". They have 34–42 teeth including 12 incisors, 4 canines, 8–16 premolars and 10 molars. The teeth are adapted for a more carnivorous diet than that of the brown bear, having longer, sharper and more spaced out canines, and smaller, more pointed cheek teeth (premolars and molars). The species has a large space or diastema between the canines and cheek teeth, which may allow it to better bite into prey. Polar bears have large paws, with the front paws being broader than the back. The feet are hairier than in other bear species, providing warmth and friction when stepping on snow and sea ice The claws are small but sharp and hooked and are used both to snatch prey and climb onto ice.
Size
Adult males weighing 300–800 kg (660–1,760 lb). Males are generally 200–250 cm (6.6–8.2 ft) long with a weight of 300–800 kg (660–1,760 lb). Females are smaller at 180–200 cm (5.9–6.6 ft) with a weight of 150–300 kg (330–660 lb).
Diet
They are mostly carnivorous and specialized for preying on seals, particularly ringed seals. Such prey is typically taken by ambush; the bear may stalk its prey on the ice or in the water, but also will stay at a breathing hole or ice edge to wait for prey to swim by. The bear primarily feeds on the seal's energy-rich blubber. Other prey include walruses, beluga whales and some terrestrial animals. Preys on animals much smaller than it. The polar bear is a hypercarnivore, and the most carnivorous species of bears. Ringed seals are ideal prey as they are abundant and small enough to be overpowered by even small bears. Bearded seal adults are larger and are more likely to break free from an attacking bear, hence adult male bears are more successful in hunting them. Less common prey are hooded seals, spotted seals, ribbon seals and the more temperate-living harbour seals. Polar bears, mostly adult males, will occasionally hunt walruses both on land and ice. They mainly target young walruses, as adults, with their thick skin and long tusks, are too large and formidable. Besides seals, bears will prey on cetacean species such as beluga whales and narwhals, as well as reindeer, birds and their eggs, fish and marine invertebrates. They rarely eat plant material as their digestive system is too specialized for animal matter, though they have been recorded eating berries, moss, grass and seaweed. Their southern range, especially near Hudson Bay and James Bay, polar bears endure all summer without sea ice to hunt from and must subsist more on terrestrial foods. Fat reserves allow polar bears to survive for months without eating. Cannibalism is known to occur in the Polar Bears.
Hibernation
Most polar bears are active year-round. Hibernation occurs only among pregnant females. Non-hibernating bears typically have a normal 24-hour cycle even during days of all darkness or all sunlight, though cycles less than a day are more common during the former. The species is generally diurnal, being most active early in the day. Polar bears sleep close to eight hours a day on average. They will sleep in various positions, including curled up, sitting up, lying on one side, on the back with limbs spread, or on the belly with the rump elevated. On sea ice, polar bears snooze at pressure ridges where they dig on the sheltered side and lie down. After a snowstorm, a bear may rest under the snow for hours or days. On land, the bears may dig a resting spot on gravel or sand beaches. They will also sleep on rocky outcrops. In mountainous areas on the coast, mothers and subadults will sleep on slopes where they can better spot another bear coming. Adult males are less at risk from other bears and can sleep nearly anywhere.
Reproduction and development
Mothers give birth to cubs in maternity dens during the winter. Young stay with their mother for up to two and a half years. Polar bear mating takes place on the sea ice and during spring, mostly between March and May. The movements of females remain linear and they travel more widely. Mother polar bears typically give birth to two cubs per litter. When the mating season ends, the female will build up more fat reserves to sustain both herself and her young. Sometime between August and October, the female constructs and enters a maternity den for winter. Depending on the area, maternity dens can be found in sea ice just off the coastline or further inland and may be dug underneath snow, earth or a combination of both. The inside of these shelters can be around 1.5 m (4.9 ft) wide with a ceiling height of 1.2 m (3.9 ft) while the entrance may be 2.1 m (6.9 ft) long and 1.2 m (3.9 ft) wide. The temperature of a den can be much higher than the outside. Females hibernate and give birth to their cubs in the dens. As with other bear species, newborn polar bears are tiny. The newborns have woolly hair and pink skin, with a weight of around 600 g (21 oz). Their eyes remain closed for a month. The mother's fatty milk fuels their growth, and the cubs are kept warm both by the mother's body heat and the den. The mother emerges from the den between late February and early April, and her cubs are well-developed and capable of walking with her. At this time they weigh 10–15 kilograms (22–33 lb). A polar bear family stays near the den for roughly two weeks; during this time the cubs will move and play around while the mother mostly rests. They eventually head out on the sea ice. Cubs under a year old stay close to their mother. When she hunts, they stay still and watch until she calls them back. Observing and imitating the mother helps the cubs hone their hunting skills. After their first year they become more independent and explore. At around two years old, they are capable of hunting on their own. N39 43.607 W080 15.771
DO NOT GO TO THE POSTED CORDS. YOU WILL NOT FIND THE CACHE THERE. YOU NEED TO SOLVE FOR THE CORRECT CORDS.
Please remember you are in Greene County, PA and satellite service is not the best. So, plan accordingly to have a good caching experience.
****Please be cautious when doing these caches as they are hidden along busy highways. Caches are kid friendly but hides are not necessarily kid friendly. Caution is highly suggested. ****
Puzzle
You know what to do.
REMEMBER TO SAVE YOUR PUZZLE PIECE FROM THE CHECKER.
You can validate your puzzle solution with
certitude.