Beluga Whale

Beluga Whale at a glance

Need to know

• Belugas are also known as the 'canaries of the sea' due to their wide range of vocalizations.
• Unlike most whales, belugas can turn their heads side to side thanks to unfused neck vertebrae.
• They can live in both saltwater and freshwater and are commonly found far up rivers.
• Belugas undergo seasonal migrations, moving from wintering areas in the sea to summer areas in estuaries and river mouths.
• Their white coloration provides camouflage within Arctic ice.

About the Beluga Whale

The beluga whale, sometimes called the 'white whale,' is a highly distinctive cetacean of the Arctic and subarctic seas. Recognized for their striking all-white coloration and prominent rounded melon head, beluga whales are extremely vocal, producing an array of clicks, whistles, and clangs that have earned them the nickname 'canaries of the sea.' Unlike most whales, belugas can move their heads freely from side to side due to unique neck vertebrae, helping them maneuver under sea ice and hunt for food.

Belugas inhabit cold northern waters and display remarkable adaptability, entering estuaries and rivers in the summer to feed and calve. Though their global population is considered stable, certain isolated populations—such as the Cook Inlet belugas—are endangered and require focused conservation efforts.

Physical characteristics

Size: Typically 3.5 to 5.5 meters (11.5–18 feet) long. Weight: Typically 1,100 to 1,800 kg (2,425–3,968 lbs). Lifespan: Average 35–40 years; up to 70 years in rare cases.

• All-white skin in adults
• Prominent bulbous melon head
• Lack of dorsal fin
• Flexible neck allowing head movement
• Short, broad flippers and powerful tail flukes

Notable species

• Beluga Whale (Delphinapterus leucas) — Least Concern (global); Endangered (some subpopulations, e.g., Cook Inlet). Shallow coastal waters, estuaries, river mouths, and sea ice edges in Arctic and subarctic regions Regions: Beaufort Sea, Bering Sea, Chukchi Sea, Hudson Bay, White Sea, Gulf of St. Lawrence, Cook Inlet, Sea of Okhotsk.

Habitat and range

Original range: Coastal and riverine waters throughout the Arctic and subarctic regions of the Northern Hemisphere

Current distribution: Circumpolar distribution in Arctic and subarctic seas, with year-round and migrant populations spanning North America, Russia, Greenland, and parts of Norway

Preferred environments: Coastal shallow waters, Estuaries and river mouths, Sea ice edges, Arctic and subarctic bays

Regions: Beaufort Sea, Bering Sea, Chukchi Sea, Hudson Bay, White Sea, Gulf of St. Lawrence, Cook Inlet, Sea of Okhotsk

Where to see Beluga Whale

• Churchill River estuary (Hudson Bay, Canada) — July–August. Thousands of belugas gather near the river each summer; boat and snorkel tours available.
• Cook Inlet, Alaska — May–September. Some of the most endangered belugas; viewing from the shore or estuary tours.
• White Sea, Russia — June–July. Accessible by research expeditions or eco-tour groups, including opportunities for underwater observation.

Behavior and diet

Diet: Beluga whales eat fish (such as salmon, capelin, smelt, herring), cephalopods, and crustaceans. Diet varies seasonally and by region.

Social structure: They live in small pods (2–25 whales), but can form massive groups of hundreds during summer migrations or feeding.

Communication: Belugas communicate via a rich repertoire of whistles, clicks, chirps, and clangs; they also use body language (slapping, rolling) and echolocation.

• Seasonal migration between sea and riverine habitats
• Moulting skin by rubbing on gravel and sand in estuaries
• Can swim backwards and turn heads side-to-side
• Highly vocal and interactive pod behavior

Interactions with other animals

• Polar bear (predator): Polar bears prey on belugas trapped in ice holes or close to shore.
• Orca (Killer whale) (predator): Orcas hunt belugas in open water, particularly targeting calves and isolated individuals.
• Arctic Cod (prey): Belugas consume Arctic cod as a staple food source in many regions.
• Humans (competitive): Historically hunted for meat, blubber, and skin; now face competition with fisheries for prey species.

Conservation

IUCN Red List status: Least Concern (global); select subpopulations Endangered

Threats

• Climate change reducing sea ice habitat
• Pollution (PCBs, heavy metals)
• Oil and gas exploration and shipping noise
• Overharvesting in isolated populations
• Entanglement in fishing gear
• Disease outbreaks

Conservation efforts

• Legal protection under the Marine Mammal Protection Act (USA)
• International regulation of trade through CITES
• Monitoring and protection of critical habitats
• Population tracking via satellite and photo-ID studies

How to help

• Support conservation organizations working in the Arctic
• Reduce plastic use and properly dispose of hazardous waste
• Advocate for limits on Arctic oil and gas exploration
• Report stranded or injured whales to local authorities

Beluga Whale facts for kids

Beluga whales are beautiful, bright white whales that live in the cold Arctic Ocean. They are very social and love to 'talk' with each other using clicks and whistles. Belugas can even move their heads like humans!

• Baby belugas are born gray and turn white as they grow older.
• Belugas don't have a dorsal fin—perfect for swimming under ice.
• They are called the 'canaries of the sea' because they are so noisy.
• Belugas can swim backwards!
• Each beluga whale has its own unique whistle.

Did you know? Did you know? Beluga whales can actually smile! Their mouth shape makes them look like they're always happy.

Watch & learn

• Beluga Whale: The Canaries of the Sea — National Geographic Wild. Explore the fascinating vocalizations and social behaviors of Delphinapterus leucas in their Arctic habitat, with stunning underwater footage and expert commentary.
• Beluga Whales: Arctic Survivors — BBC Earth. Watch as BBC Earth documents the remarkable adaptability of beluga whales to icy Arctic environments, following their seasonal migrations and interactions with other marine life.
• The Secret Life of Beluga Whales — Smithsonian Channel. Discover hidden aspects of beluga whale behavior, intelligence, and communication in this scientifically grounded episode featuring close encounters with wild belugas.
• Belugas: White Whales in a Changing Arctic — PBS Nature. This PBS Nature feature details the challenges beluga whales face due to climate change, combining dramatic Arctic footage with insights from whale researchers.
• Beluga Whales: Social Bonds and Family Life — BBC Earth. Join BBC Earth in observing the complex social structures and family bonds of beluga whales, including mother-calf relationships and group interactions beneath the ice.