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For both sexes, excluding the male's tusk, the total body size can range from 3.95 to 5.5 m (13.0 to 18.0 ft); the males are slightly larger than the females. The average weight of an adult narwhal is 800 to 1,600 kg (1,800 to 3,500 lb).
The left tooth develops into a twisted tusk up to 3 m in length, the right tooth usually remains undeveloped. The narwhal is a rare species, found in arctic waters, primarily around Greenland and the northern part of the Canadian archipelago.Narwhals live among the ice and feed on cephalopods and fish. Tomilin, A. G. Kitoobraznye. Moscow, 1957. (Zveri SSSR i prilezhash-chikh strati, vol.he left tooth develops into a twisted tusk up to 3 m in length, the right tooth usually remains undeveloped. The narwhal is a rare species, found in arctic waters, primarily around Greenland and the northern part of the Canadian archipelago. Narwhals live among the ice and feed on cephalopods and fish.