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(bəlo͞o`gə) or

white whale,

small, toothed northern whalewhale,
aquatic mammal of the order Cetacea, found in all oceans of the world. Members of this order vary greatly in size and include the largest animals that have ever lived. Cetaceans never leave the water, even to give birth.
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, Delphinapterus leucas. The beluga may reach a length of 19 ft (5.8 m) and a weight of 4,400 lb (2,000 kg). It has a small, round head, with a short, broad, beaklike snout, and a flexible neck; its flippers are short, broad, and rounded, and it lacks a dorsal fin. It produces a variety of noises and is sometimes called a sea canary. The young are born with dark fur but become almost pure white in maturity. Belugas winter in the Arctic Ocean, feeding upon crustaceans, fish, and squid; they are often found in groups of several hundred individuals. They mate in spring, and in summer they enter northern rivers. The young are born after a gestation period of 14 months, one calf every second year. The beluga is hunted by the Eskimo for food and by commercial whalers for its hide, which is known as porpoise hide. Beluga is also the common name of the largest of the sturgeonssturgeon,
primitive fish of the northern regions of Europe, Asia, and North America. Unlike evolutionarily advanced fishes, it has a fine-grained hide, with very reduced scalation, a mostly cartilaginous skeleton, upturned tail fins, and a mouth set well back on the underside of
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. Beluga whales are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Mammalia, order Cetacea, family Monodontidae.



(Huso huso), a valuable commercial fish of the sturgeon family.

The beluga is up to 9 m long. It weighs up to 1 ton or up to 1.5 tons in exceptional cases. The beluga is distinguished from other sturgeons by its huge crescent-shaped mouth and fused branchial membranes. Beluga live in the Caspian, Black, Azov, and Adriatic seas, from which they enter the rivers. They reach sexual maturity at 12–18 years, when they are about 2 m long. They enter the rivers for reproduction, producing from 0.5 to 5 million eggs. When beluga are in the Volga two races are distinguished: the spring beluga (which enter the river in April and spawn in May of the same year) and the winter beluga (which enter the river in the fall and spawn in the spring of the following year). The beluga fry slip out to sea, where they feed on mollusks and crustaceans. The adults feed on various fish (roach, herring, gobies, anchovies, Black Sea haddock, and others).

The roe of the beluga is larger than that of other sturgeons and is used mainly in the manufacture of soft caviar. The number of beluga has been sharply reduced by the destruction of the conditions for their reproduction by construction of a series of hydroelectrical projects, as well as by the pollution of rivers with industrial waste.


Berg, L. S. Ryby presnykh vod SSSR i sopredel’nykh stran, 4th ed., part 1. Moscow-Leningrad, 1948.
Promyslovye ryby SSSR: Opisanie ryb. Moscow, 1949. [Text and atlas.]


1. a large white sturgeon, Acipenser (or Huso) huso, of the Black and Caspian Seas: a source of caviar and isinglass
2. another name for white whale
References in periodicals archive ?
The detection period of beluga whale clicks during fall 2013 was very short and suggests a southward migration through Baffin Bay.
The difference between a human being and a beluga whale, for example, is not necessarily the same as the difference between a human being and a lizard, or between a lizard and a whale.
Since April 2009, the Buccaneer Alaska team has been aware that NOAA planned to designate certain areas within the Cook Inlet as critical habitat for the beluga whale.
The Center also works directly to protect many of the species for which they are offering ringtones, including the Orca (Pacific Northwest), Beluga Whale (Arctic), California Red-legged Frog (California), Foothill Yellow-legged Frog (California, Oregon), Mountain Yellow-legged Frog (Sierra Nevada and Southern California), Oregon Spotted Frog (Pacific Northwest), Yosemite Toad (Sierra Nevada), Ash-breasted Tit-tyrant (Peru, Bolivia), Blue-throated Macaw (Bolivia), Fringe-backed Fire-eye (Brazil), Peruvian Plantcutter (Peru), California Spotted Owl (Sierra Nevada and Southern California), and Western Burrowing Owl (Western U.
In The Aquarium's most shocking moment, a beluga whale is shown wedged into a tiny feeding cell filled with water.
In this study, we examined cellular location and relative levels of CYP1A1 expression in multiple organs of beluga whale from the St.
We report the results of an analysis designed to determine whether sea state, as measured by the Beaufort (BF) scale, affects beluga whale density estimates.
Today, the entire population of Cook Inlet beluga whales has shrunk from an estimated 1,000 at the beginning of the decade to approximately 350.
Just a few weeks later, North East sea-watchers were thrilled to catch glimpses of a pair of rare and distinctive beluga whales.
Acoustic monitoring and prey association for beluga whale, Delphinapterus leucas, and harbor porpoise, Phocoena phocoena, off two river mouths in Yakutat Bay, Alaska.
Background document for development of a circumpolar beluga whale (Delphinapterus leucas) monitoring plan.
The legendary snapper, described by Sir David Attenborough as the best in the business, serenaded a pod of beluga whales with the song.