Life expectancy of humpback whales is about 40-45 years. Females become pregnant in winter. In the southern hemisphere this is June-August. Pregnancy can also occur in the spring – until November. Its term is 11 months. Always one cub is born. Its weight at that is about a ton, and the body length reaches 4 meters.
Feeding with milk lasts 10 months. During this period, the baby adds 8 tons in weight, and the length of his body increases to 9 meters. With his mother he is a year and a half. After the young whale leaves the female, she again becomes pregnant. Thus, pregnancy in humpback whales is 1 time in 2 years. Sexual maturity in these animals comes in 5 years.
Most of the time the humpback prefers to spend in the coastal waters. This is a narrow strip of water, not exceeding 100 km from the shore. Only during migration the whale rushes into the open ocean. He usually swims at a speed of 10-15 km / h. The maximum speed that he can develop in the water is 30 km / h.
When feeding his dive does not exceed 15 minutes. Without air can withstand 30 minutes. The maximum depth to which this animal dives is 300 meters. It produces a water fountain 3 meters high. Being in the group, the humpback whale can manifest aggression. There have been cases of his attack on small boats and boats. It jumps out of the water for 2/3 of its body length.
