How do beluga whales reproduce

The only obvious difference between beluga whales and other cetaceans is that they can exuviate when their skin is yellowish in summer. It usually swims slowly and is difficult to identify in waves and ice floes. So how do beluga whales breed?

First, how do beluga whales reproduce

The beluga whale breeding season usually lasts from late February to early April, and the pregnancy lasts for 14 months, but there may also be delays in embryo implantation. The cubs are born in the summer from May to July, and the newborn whales are dark gray.

Second, the living habits of beluga whales

1. Pronunciation

The beluga whale is the best ventriloquist in the whale kingdom, which can make hundreds of sounds and make a variety of sounds. In order to understand the voice of beluga whales, scientists made live underwater recordings at the beluga whale migration destination in the estuary delta, and the results were beyond imagination. They heard the roar of beasts, the mooing of cattle, the purr of pigs, the hissing of horses, the squeaking of birds, the screams of women, the groans of patients and the cries of babies. Beluga whales can also make hinges, bells, steamships and so on. Beluga whales keep "singing", in fact, they are entertaining themselves, and it is also a kind of communication between companions, which is an important part of their summer migration.

two。 natural enemy

The known natural enemies are orcas and polar bears. Polar bears attack beluga whales by attacking seals, usually waiting around the vents of trapped ice, giving them a heavy blow with their powerful forepalms, and then dragging them to the ice to eat. When orcas arrive around August, beluga whales can usually recognize their voices. In addition, orcas' protruding flippers hinder their flexible movement in the ice, so orcas attack beluga differently.

3. Ingestion

Beluga whales eat a variety of prey, including cucumber, flounder, juniper, salmon and cod, as well as invertebrates such as crabs, shrimp, clams, worms, octopus, squid and other marine benthos. Since they do not have too many sharp fangs to bite their prey, they usually suck the food into their mouths, so the prey should not be too big, otherwise they may choke.

4. Migration

Every July, thousands of beluga whales set out from the Arctic to begin their summer migration. As few as a few, as many as tens of thousands of them, Haojie swam to their destination, playing leisurely along the way. and keep performing. Most of their migration destinations are concentrated at northern latitudes. However, some naughty beluga whales seem to have a penchant for roaming alone, sometimes going south alone, swimming hundreds of kilometers, showing their dignity in the mouth of the Heilongjiang River, the Foss Estuary in Scotland or the Rhine River, bringing people a pleasant surprise.

Most of the world's beluga whales live in the waters north of Europe, Alaska and Canada. Several beluga whale-concentrated areas have become whale-watching sites, including the lower St. Lawrence River in eastern Canada and the Churchill River estuary west of Hudson Bay.