Difference between White Whale and Beluga

WHITE WHALE vs BELUGA: NOUN

A fish, Huso huso, found in the Caspian Sea and the Black Sea, that is a source of caviar
A cetacean, Delphinapterus leucas, found in the Arctic Ocean.
The caviar obtained from the beluga{2}; -- also called beluga caviar. The caviar of the beluga is considered the finest sort, larger and of a taste superior to that obtained from other sturgeon. See also sturgeon and caviar.
The sturgeon (Huso huso) native to the Black Sea and Caspian Sea; -- also called hausen. It is valued for its roe, sold as caviar, and is also used for production of isinglass. See also sturgeon.
A cetacean allied to the dolphins.
[capitalized] [NL.] A generic name of the white whales: a synonym of Delphinapterus.
The large white sturgeon, Acipenser huso, from the roe of which, sometimes weighing 800 pounds, caviar or botargo is prepared.
Caviar made from the roe of this fish, having large grayish grains.
A large white anadromous sturgeon (Huso huso) of the Black and Caspian Seas, valued for its roe.
A small toothed whale (Delphinapterus leucas) chiefly of the Arctic Ocean, having a bulbous forehead and a white body when full-grown.
Small northern whale that is white when adult
Valuable source of caviar and isinglass; found in Black and Caspian seas

Earless seal, Whalesucker, Finback whale, Mallemaroking, Bottlenose dolphin, Cetology, Odontocete, Sea cow, Right whale, Sea elephant, Cetaceous, Whale, Blue whale, Delphinapterus leucas, Beluga

Walrus, Humpback whale, Baleine, Pyle, Orc, Caviar, Bowhead, Whales, Whale, Sturgeon, Hausen, White whale, White sturgeon, Delphinapterus leucas, Acipenser huso

Hair seal, Earless seal, Whalesucker, Finback whale, Mallemaroking, Bottlenose dolphin, Cetology, Odontocete, Sea cow, Right whale, Sea elephant, Cetaceous, Whale, Blue whale, Beluga

Whale shark, Bowhead whale, Fin whale, Orca, Gray whale, Harp seal, Walrus, Humpback whale, Orc, Bowhead, Whales, Whale, Sturgeon, White whale, White sturgeon

Tomgram: James Carroll, The Pentagon as President Obama's Great White Whale Posted at 8:00AM on December 11, 2014.
The cybercriminals executing these attacks understand that law firms are the white whale of cyber victims.
The novel surrounds a long sea voyage ostensibly in pursuit of a mysterious white whale.
DAVID So the film frame liberated me from the white whale.
Stellantis, was thrilled to finally team up with his white whale of all celebrity cameos.
Obtaining these numbers, though, can feel like chasing the proverbial white whale.
What should he have done, rather than pursue the White Whale?
Uresia is my metaphorical Great White Whale of fantasy settings.
Starbuck; wilt thou not chase the white whale?
Is not this harpoon for the White Whale?

Beluga people tend to be gentle, imaginative, creative, musically inclined souls.
The elegant Sail Beluga private charter at Leeward on Providenciales.
Size and Biomagnification: How Habitat Selection Explains Beluga Mercury levels.
Oil Pipeline Leak In Alaska Threatens Endangered Beluga Whal.
This image provided by Airbus shows a Beluga aircraft.
Cook Inlet beluga whale DPS under the ESA.
Humpback, beluga, grey and orca are seen frequently.
Beluga School for Life About four years ago the Beluga School for Life was founded in the south of Thailand.
Oh baby Beluga, oh baby Beluga, is the water warm?
Beluga River, Beluga Lake, and the Triumvirate Glacier.