The body is stout, white or yellow, with a round head, a short beak and no dorsal fin. Mature beluga whales will have a unique white body, a small proportion of the head, a forehead on it, and a well-defined fold behind the jet hole.

Scars are often distributed on the body surface, and there may be wrinkles and fat wrinkles. The back replaces the dorsal fin, which is located in the middle and rear part of the upper half. The trailing edge of caudal fin is dark brown, and the central notch is obvious. The caudate lobe process becomes more and more obvious with age. The neck can move freely and can nod and turn. The pectoral fin is wide, scraper-shaped and free to move; Lip width. Male pectoral fins bend upward, which becomes more and more obvious with age.

Extended data:

Characteristics of beluga whales

1, feeding habits

The feeding habits of beluga whales vary with the number of prey in different regions and seasons. It is found that beluga whales eat all kinds of creatures, including fish (salmon, cod, herring, etc. ), Cephalopods (squid, octopus, etc. ), crustaceans (shrimp, crab), marine worms and even large plankton.

But they are not as fierce as killer whales. Almost all feed near the bottom of the sea, at least 300 meters deep. Moby Dick's wrinkled lips can generate suction when looking for food, and can also spray water on the audience of Sea World.

2. Growth and reproduction

The breeding period will vary from region to region. Generally speaking, pregnancy mostly occurs in late winter or summer, and Alaska is from the end of February to the beginning of April; East Canada and West Greenland are in May.

According to credible statistics, pregnancy may last from less than one year to 14.5 months. The beluga whale suckles for up to two years and then stays with its mother for a long time. The average birth interval is about two years.

3. Living habits

Beluga whales are highly gregarious, and will form a group with extremely close ties among individuals, usually composed of beluga whales of the same sex and age, and there are also smaller mother and son beluga populations. When there is no threat from hunters or natural enemies, more than thousands of beluga whales can gather in the estuary delta waters.

Beluga whales can make all kinds of sounds, including rotating trills, quacks, bells, sharp clicks (probably made by patting their chins), and the sound of almost pushing away rusty door panels.

Reference source; Baidu Encyclopedia-Mobidick