Male narwhals can reach a length of 5 meters and weigh up to 1,800 kg. Females are somewhat smaller, reaching a length of 4 meters and 1,000 kg. Narwhals reach sexual maturity between 6-9 years, and females give birth to a calf every third year, on average. The gestation period is about 14 months and they give birth in spring (April-May). | Male narwhals can reach a length of 5 meters and weigh up to 1,800 kg. Females are somewhat smaller, reaching a length of 4 meters and 1,000 kg. Narwhals reach sexual maturity between 6-9 years, and females give birth to a calf every third year, on average. The gestation period is about 14 months and they give birth in spring (April-May). |