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They swim or they drown. So yes they swim
Whales, like all mammals, give birth to live young. The calves are pushed out of the uterus through labor contractions. After birth, the whale calves are encouraged to swim upwards to draw their first breath of air, then begin to nurse from the mother.
Within moments of its birth.
Whales are viviparous, they give birth to live young (unlike fish, most of which lay eggs). Like all mammals, whale calves are nourished with milk from their mothers. The nursing period is long (more than one year in many species), which is associated with a strong bond between mother whales and their young. In most whales, reproductive maturity occurs late, typically at 7 to 10 years. Whales breed seasonally, usually in warm tropical waters and females usually have one calf every 1 - 3 years. The gestation period ranges from 9 - 18 months. Whale calves can swim soon after birth.
Cubs learn to swim when they're around a year or two of age.
A Humpback Whale can swim up to 17 miles per a hour!
in the ocean
swim
they swim.
PEOPLE!
As far as a blue whale can swim in a year
they do