Although some marine mammals are known to drink seawater at least on occasion, it is not well established that they routinely do so. They have other options: sea-dwelling mammals can get water through their food, and they can produce it internally from the metabolic breakdown of food (water is one of the by-products of carbohydrate and fat metabolism).
The salt content of the blood and other body fluids of marine mammals is not very different from that of terrestrial mammals or any other vertebrates: it is about one third as salty as seawater. Because a vertebrate that drinks seawater is taking in something three times saltier than its blood, it must get rid of the excess salt by producing very salty urine. In the seal and sea lion species including walrus, for which measurements exist, the animals' urine contains up to two and a half times more salt than seawater does and seven or eight times more salt than their blood.
Source - nurnord
walruses get their food by rushing in the water quickly and opening their mouths like whales.
Walruses play around in circles in the water after they get food and rest then play that is the truth.
Walruses can float due to their very high body fat content.
they sleep and float on the water
flubber
Penguins and other water fowl
it depends on what you mean by "drink" if you mean drink alcohol, then no. but walruses drink. all living animals need water.
Like the majority of animals. But they give birth in the water.
When they're hungry, and when they think it's safe to go into the water.
maybe the looking for fish in it or using it to drink out water :)
The collective nouns are a herd of walruses, a huddle of walruses, a pod of walruses.
A walruses have one baby walruses 2-3 years.