Not much information is known about the reproduction of the narwhal so there are many different results. We have tried to give you an overview of these answers.
Baby Stage:Top of Form
The calf (baby narwhal) is born live and stays with its mother for 20 months after birth. Baby narwhals are usually brown with no spots or flecks. Males are not born with their tooth/tusk. The male calf sexually matures at the age of 8-13 years old while the female will sexually mature at 4-8 years old. At birth narwhals are usually 5 feet long and 80kg in weight.
The adult narwhal is about 4 metres in length. The average weight of a male narwhal is 1.6 tons and the average weight of a female is 0.9 tones. Only male narwhal’s gain a long tusk, it is believed that it is for mating and fighting over a mate. The narwhal lives for about 35-55 years. The gestation period for a female narwhal is 8 months.
As a conclusion the narwhal lives a life in which it mates, grows a tusk (if male) and dies at the age of 45-ish.