These are ready-to-use walrus worksheets that are perfect for teaching students about this cinnamon-colored gentle giant which is called a walrus. [7] An alternative theory is that it comes from the Dutch words wal "shore" and reus "giant".[8]. O. rosmarus rosmarus © copyright 2003-2020 Walruses are usually brown, but walruses can change colour depending on how warm they are. They weigh 45 to 75 kg (99 to 165 lb) at birth and are able to swim. Since a walrus's hide usually accounts for about 20% of its body weight, the total body mass of these two giants is estimated to have been at least 2,300 kg (5,000 lb).

No guarantee is intended and approval or final color selections and color placement are the responsibility of the property owner or the owner's agent. San Diego. 1990.

Are you wild about whales? The tusks grow for about 15 years before they reach their full length, which is about 40 in (102 cm) for males and 30 in (76 cm) for females. [according to whom? [4] A 28,000-year-old fossil walrus was dredged up from the bottom of San Francisco Bay, indicating that Pacific walruses ranged that far south during the last Ice Age. Maxalt (rizatriptan) has not been reported as causing a change in urine color, unfortunately.However, there are a number of medications that can change urine color, so if you are taking anything in addition to Maxalt, there could be another culprit..

They are among the largest pinnipeds — fin-footed, semi-aquatic marine mammals. Walrus do not go further than 30 km off the coast. They can use it to protect themselves from polar bears and killer whales, and use them when they eat. RGB color space. It disturbs (bioturbates) the sea floor, releasing nutrients into the water column, encouraging mixing and movement of many organisms and increasing the patchiness of the benthos.

The archaic English word for walrus—morse—is widely thought to have come from the Slavic languages,[9] which in turn borrowed it from Finno-Ugric languages. As a result of less sea ice, walrus are changing their behavior. Blubber may be up to 15 cm (6 in.) KidsKonnect is a growing library of high-quality, printable worksheets for teachers and homeschoolers. She will give birth to one calf. Asked by Wiki User. They winter over in the Bering Sea along the eastern coast of Siberia south to the northern part of the Kamchatka Peninsula, and along the southern coast of Alaska. This animal is generally not aggressive and prefers to eat small crustaceans and mollusks. Although Carroll accurately portrays the biological walrus's appetite for bivalve mollusks, oysters, primarily nearshore and intertidal inhabitants, these organisms in fact comprise an insignificant portion of its diet in captivity. To locate food, walruses use their vibrissae (whiskers). Like seals, the walrus is a pinniped. [54], The isolated population of Laptev Sea walruses is confined year-round to the central and western regions of the Laptev Sea, the eastmost regions of the Kara Sea, and the westmost regions of the East Siberian Sea. [69] The bears also isolate walruses when they overwinter and are unable to escape a charging bear due to inaccessible diving holes in the ice. Tusks are also used to form and maintain holes in the ice and aid the walrus in climbing out of water onto ice.

Walrus are now protected from sealers but are still subject to subsistence hunting by aboriginals. Find quick information and fun facts with these 1-page easy resources about animals from A to Z.

[14] The key distinguishing feature was the development of a squirt/suction feeding mechanism; tusks are a later feature specific to Odobeninae, of which the modern walrus is the last remaining (relict) species. The distinctive 12th-century Lewis Chessmen from northern Europe are carved from walrus ivory. The walrus (Odobenus rosmarus) is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. [25] While the dentition of walruses is highly variable, they generally have relatively few teeth other than the tusks.

This is a fantastic bundle which includes everything you need to know about Walrusacross 21 in-depth pages. [82] Reduced coastal sea ice has also been implicated in the increase of stampeding deaths crowding the shorelines of the Chukchi Sea between eastern Russia and western Alaska. San Francisco: Sierra Club Books, 1992.

Baltimore: Johns Hopkins University Press, 1991.

Walruses have lots of things similar to true seals and eared seals.Like true seals, they just have a hole for an ear - not ear flaps. The dominant males are chosen by age, body size and tusk length. [23] Tusks are slightly longer and thicker among males, which use them for fighting, dominance and display; the strongest males with the largest tusks typically dominate social groups. [28] The females join them and copulate in the water.

In some cases, walruses can appear to be more gray in color,... See full answer below. A walrus moves its snout through bottom sediment to find food. "Ecology and Biology of the Pacific Walrus, "The sensitivity of the vibrissae of a Pacific Walrus (, "Carnivorous walrus and some arctic zoonoses", "Izembek National Wildlife Report Sept 2015", "Stock Assessment Report: Pacific Walrus – Alaska Stock", "Status of Marine Mammals of the North Atlantic: The Atlantic Walrus", "Atlantic Walrus: Northwest Atlantic Population", "Disappearance of Icelandic Walruses Coincided with Norse Settlement", 10.1890/0012-9615(2001)071[0137:CDPOPA]2.0.CO;2, "Feeding behaviour of free-ranging walruses with notes on apparent dextrality of flipper use", "Feeding and Trophic Relationships of Phocid Seals and walruses in the Eastern Bering Sea", "Narwhals, Narwhal Pictures, Narwhal Facts", "Interactions between Polar Bears and Overwintering Walruses in the Central Canadian High Arctic", "North American Bear Center – Polar Bear Facts", "A review of Killer Whale interactions with other marine mammals: Predation to co-existence", "Hunting and Use of Walrus by Alaska Natives", "Use and preference for Traditional Foods among Belcher Island Inuit". Parker, S. ), Female: About 400 to 1,250 kg (882 to 2,756 lbs. Blubber also streamlines the body and functions as an excess energy reserve. O. rosmarus rosmarus [18] Length typically ranges from 2.2 to 3.6 m (7 ft 3 in to 11 ft 10 in). Both in Chukotka and Alaska, the aurora borealis is believed to be a special world inhabited by those who died by violence, the changing rays representing deceased souls playing ball with a walrus head. The diet of the Pacific walrus consist almost exclusively of benthic invertebrates (97 percent). If you reference any of the content on this page on your own website, please use the code below to cite this page as the original source. Answer. © 2020 SeaWorld Parks & Entertainment, Inc. All Rights Reserved. Sign Up. Nowak, Ronald M. Male: Adult males are slightly larger than females with longer and stouter tusks. [62] There have been isolated observations of walruses preying on seals up to the size of a 200 kg (440 lb) bearded seal. [25], Seal tissue has been observed in fairly significant proportion of walrus stomachs in the Pacific, but the importance of seals in the walrus diet is under debate. The origin of the word walrus is thought by J.R.R. [17] The Atlantic subspecies weighs about 10–20% less than the Pacific subspecies. At 15 years old, males will start to mate.

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