Walruses can live up to 40 years.
This species is subdivided into three subspecies: the Atlantic walrus (O. r. rosmarus) which lives in the Atlantic Ocean, the Pacific walrus (O. r. divergens) which lives in the Pacific Ocean, and O. r. laptevi, which lives in the Laptev Sea of the Arctic Ocean. 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). The Atlantic subspecies weighs about 10–20% less than the Pacific subspecies. They don't move quickly on land but are swift in the water. Walruses can swim on average around 4.35 mph (7 km/h) and as fast as 21.74 mph (35 km/h), according to the MarineBio Conservation Society. A group of walruses is called a herd. They gather by the hundreds to sunbathe on the ice. During mating season, walruses amass by the thousands. A walrus can live for forty years or more and is, indeed, a unique and marvelous creature of this earth. Resting walrus group with one member awake. Notice the walrus with its tusks raised as it squints to see who is nearby. Walruses have poor eyesight but are very curious. The females only have a calf every two to three years. The babies stay with their mother for over two years. Although the males mature at about 10 years of age and the females at about 8, most males do not mate until they are at least 15 and females usually do not give birth until they are around 10 years old. Walruses weigh from 600 to 1,500 kilograms (1,320 to 3,300 lbs.) and can be as long as 3.2 meters (10.5 feet), according to the Animal Diversity Web (ADW), a database maintained by the Museum of Zoology at the University of Michigan. Walruses can swim on average around 4.35 mph (7 km/h) and as fast as 21.74 mph (35 km/h), according to the MarineBio Conservation Society. A group of walruses is called a herd. They gather by the hundreds to sunbathe on the ice. During mating season, walruses amass by the thousands. Then, at 3 years old, the male calves will go off to live with the male herd. At 15, the male will start to mate. Females will mate as soon they reach 5 years old. Walruses can live up to 40 years. Walruses can swim on average around 4.35 mph (7 km/h) and as fast as 21.74 mph (35 km/h), according to the MarineBio Conservation Society. A group of walruses is called a herd. They gather by the hundreds to sunbathe on the ice. During mating season, walruses amass by the thousands. | Filed Under: Animals Leave a Comment. Walruses usually live to a ripe old age of about 20–30 years old in the wild. Male Walruses do not usually mate until fully developed around 15 years of age, about 8 years after they reach sexual maturity. The females begin ovulating when they are about 4–6 years old, and are polyestrous. Breeding occurs from January to March, peaking in February. Walruses mate in the water. Males float patiently near the ice floes, waiting for females to make up their minds and jump in. Cue the romantic music and fade to black. Gestation for walruses lasts about 15 to 16 months, and a single calf is born. A huge concern though for walruses in captivity is the fact that they are highly susceptible to viruses and bacteria. This can result in them becoming very ill or even dying. The risk of parasites is a problem for them in the wild so that can sometimes be a problem for them in captivity as well. However, a great deal of their behaviors can be different in captivity than when they are in the wild so everything they do can’t be taken at face value. Many of the walruses out there in captivity have suffered some type of injury or they are very old. The female walrus is usually called a cow and is smaller than the male with tusks that are smaller generally not over two feet long. Females only get to eight and a half feet in length and weigh up to 1,800 pounds. Walrus resting in shallow water on its tusks with its nose open. The females only have a calf every two to three years. The babies stay with their mother for over two years. Although the males mature at about 10 years of age and the females at about 8, most males do not mate until they are at least 15 and females usually do not give birth until they are around 10 years old. Walruses live mostly in shallow waters above the continental shelves, spending significant amounts of their lives on the sea ice looking for benthic bivalve mollusks to eat. Walruses are relatively long-lived, social animals, and they are considered to be a  keystone species  in the Arctic marine regions. The walrus has played a prominent role in the cultures of many indigenous Arctic peoples, who have hunted the walrus for its meat, fat, skin, tusks, and bone. 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). The Atlantic subspecies weighs about 10–20% less than the Pacific subspecies. Walrus tusks can grow up to 3 feet (1 m). The tusks are canine teeth and stick out from either side of the animal's mouth. Walruses use their tusks to break through ice, and to assist in climbing out of the water and onto the ice. Walruses can swim on average around 4.35 mph (7 km/h) and as fast as 21.74 mph (35 km/h), according to the MarineBio Conservation Society. A group of walruses is called a herd. They gather by the hundreds to sunbathe on the ice. During mating season, walruses amass by the thousands.
https://en.wikipedia.org/wiki/Walrus http://www.livescience.com/27442-walrus-facts.html http://www.marinebio.net/marinescience/04benthon/arcwalrus.htm http://www.livescience.com/27442-walrus-facts.html http://www.livescience.com/27442-walrus-facts.html http://superbeefy.com/how-long-does-a-walrus-live-for-and-do-walruses-mate-and-reproduce-on-land-or-in-the-water/ http://www.walrus-world.com/walruses-in-captivity/ http://www.marinebio.net/marinescience/04benthon/arcwalrus.htm https://en.wikipedia.org/wiki/Walrus http://www.livescience.com/27442-walrus-facts.html
how long do walruses live