Walrus.
Publié le 06/12/2021
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Walrus.
Class Mammalia
Order Pinnipedia
Family Odobenidae
Genus Odobenus
Species rosmarus
Names male: bull
female: cow
young: calf
group: school
Conservation Endangered due to illegal hunting.
Concerns
Range The arctic coastline.
Habitat Areas of thin ice and water.
Size Length: 2.7 to 3.6 m (8.9 to 11.8 ft).
Weight: 800 to 1700 kg (1764 to 3748 lb).
Feeding Habits Walruses are carnivores; they feed mainly on shellfish. They swim at depths of 10 to 100 m (33 to 330 ft) to find food.
Offspring Females give birth to a single calf after a gestation period of about 11 months. The protective mothers nurse the baby for two
years.
Life Span About 30 to 40 years.
Did You Know Walruses have air sacs in their necks that enable them to keep their heads above water when they sleep.
Walruses lose their winter coat (a process called molting) every year in June and July.
Walruses use their heads to break breathing holes in ice up to 20 cm(8 in) thick. They use their tusks to widen the holes.
Normally, walruses swim at about 7 km/h (4 mph) but can reach top speeds of about 35 km/h (22 mph).
Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.
Walrus.
Class Mammalia
Order Pinnipedia
Family Odobenidae
Genus Odobenus
Species rosmarus
Names male: bull
female: cow
young: calf
group: school
Conservation Endangered due to illegal hunting.
Concerns
Range The arctic coastline.
Habitat Areas of thin ice and water.
Size Length: 2.7 to 3.6 m (8.9 to 11.8 ft).
Weight: 800 to 1700 kg (1764 to 3748 lb).
Feeding Habits Walruses are carnivores; they feed mainly on shellfish. They swim at depths of 10 to 100 m (33 to 330 ft) to find food.
Offspring Females give birth to a single calf after a gestation period of about 11 months. The protective mothers nurse the baby for two
years.
Life Span About 30 to 40 years.
Did You Know Walruses have air sacs in their necks that enable them to keep their heads above water when they sleep.
Walruses lose their winter coat (a process called molting) every year in June and July.
Walruses use their heads to break breathing holes in ice up to 20 cm(8 in) thick. They use their tusks to widen the holes.
Normally, walruses swim at about 7 km/h (4 mph) but can reach top speeds of about 35 km/h (22 mph).
Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.
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