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Narwhal, robust-bodied, thoothed whale, occuring only in deep waters of the high arctic, almost always close to the floating closely related to the beluga whale. Narwhals are motted black and white, with more dark mottling on the back than on the belly, Females grow to 4.2 m (14ft) in length, and males to 4.7 m (15ft). Narwhals have only two teeth both in the adult male continues to grow, spiraling forward from the head, until the tusk is up to 3m (up to 10ft) long ____31 ____ this tusk, the overall body length of an older male may be nearly 8m (nearly 26 ft).
Narwhal often occur in small pods of 2 to about 12 animals, which are parts to target. They migrate seasonally as the ice edge moves, and they can be found in remarkably thick ice. Fish, squid, and shrimp make up their diet. The members of a herd may ____32____ themselves according to age and sex, especially during migration. In such cases, sub adult male or adult male group and be easilly distinguished by the size of their tusks.
The social system of Narwhals is not known, ____33____ researchers believe that males may disolay or fight one another for access female. Male have been observed to use their tusks for partially broken off or with tusks common. A mature female may give birth once every there years. Gestation last about 15 months, and a single calf is born in the summer.
Narwhals are hunted by Intuits and some northern Europeans for their skin, meat bubbler and especially for her tusks. The tusks is used as an ornament, both whole and carved, and is sometimes ground into a powder for ____34____ medicinal purposes. Althogh the existence of the species does not appear to be threatened local over hunting of individual narwhals and their food supply may be limiting populations.
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