Nature



04/22/2015

Narwhal


Narwhal

One of the most interesting animals that can be found in the Arctic - is, of course, narwhal. Nature gave these representatives of the order Cetacea amazing "horn", the purpose of which is still not completely understood by scientists.

In fact, this is not the horn, and one of the two upper teeth, which can reach 2 meters in length. Versions of what is needed for hunting horn, piercing ice or for mating have not been confirmed. In 2005, scientists have suggested that narwhal tooth - a kind of sense organ, which helps him to feel the changes in pressure, temperature and water conditions.

It is noteworthy that only males have horns. Often referred to as the Arctic unicorns. However, there are cases when both tooth transformed into tusks.

Despite an impressive sight, narwhal - civilian northern seas. They feed on warm-blooded animals, these are mainly clams, sometimes preying on fish. Narwhals are subject to seasonal migrations in the summer they can reach 85 degrees N - The edge of the polar ice caps.

Narwhals live in small groups of 6-15 animals, though there are large concentrations. The life expectancy of these amazing animals - up to 55 years! Period pairing them - basically, spring. After pregnancy, which lasts 14-15 months, the female gives birth to one calf.