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Wildlife Guide · High Arctic — Canada, Greenland, Svalbard; Russian Arctic poorly surveyed

Narwhal

Monodon monoceros (Linnaeus, 1758)

An Arctic toothed whale whose tusk is a tooth — Least Concern on paper, still tied to sea ice.

Least Concern (IUCN 2017) — CITES Appendix II; COSEWIC Not at Risk (2024); ice and noise still matter
A narwhal (Monodon monoceros) surfacing in icy Arctic water, its long spiralled tusk visible above mottled grey skin

AI-generated educational wildlife portrait — World Animal Rescue Network · AI visualisation, not a photograph

In brief

A narwhal (Monodon monoceros) is an Arctic toothed whale. The tusk is a left canine tooth, not a horn. IUCN listed it Least Concern in 2017. CITES Appendix II. NOAA cites dives deeper than 1,800 metres. Least Concern is not a collecting permit for ivory. WARN does not run narwhal programmes.

Also in Animals A to Z · Animals that start with N

By WARN Research & Conservation TeamChecked against IUCN 2017 Monodon monoceros assessment, NOAA Ocean Exploration, COSEWIC 2024 and CITES Appendix IILast updated

The narwhal (Monodon monoceros) is a medium-sized toothed whale of the high Arctic. The name is often traced to an Old Norse 'corpse whale', from mottled skin. The scientific name means 'one tooth, one horn'. The 'horn' is not a horn. In most males the left canine grows through the upper lip as a counterclockwise spiral tusk two to three metres long (NOAA Ocean Exploration). Females almost never grow one. Narwhals share family Monodontidae with belugas. IUCN listed the species Least Concern in 2017 (Lowry, Laidre and Reeves): more than 170,000 animals in surveyed stocks, about 123,000 of them mature, across 12 subpopulations. That replaced Near Threatened. CITES Appendix II regulates international trade in tusks and parts. Canada's COSEWIC redesignated the species Not at Risk in May 2024. Least Concern is not a claim that ice, shipping noise or every Greenland stock is fine. This page is the species encyclopaedia. Whale hub: whale. Orca: orca. Sperm whale: sperm whale. WARN does not run Arctic cetacean programmes.

Looking for something specific?

These notes clarify the guide’s scope, common mix-ups and related information.

  • A named zoo narwhal with photo updates. WARN does not offer that.
  • Treating Least Concern as if every stock were safe. IUCN 2017 said some subpopulations warrant their own assessment. East Greenland stocks have been a separate controversy.
  • A unicorn, a horn, or a walrus tusk. The narwhal tusk is a tooth. Walrus: a different Arctic mammal.
  • WARN ice-edge tagging, quota setting or Nunavut fieldwork. We do not run those programmes.
  • A beluga, orca or sperm-whale page. Whale hub: whale. Orca: orca. Sperm whale: sperm whale.

LC

IUCN global status (2017) — Least Concern, not a tusk free-for-all

CITES II

International trade in tusks and parts is regulated

2–3 m

Typical male tusk length (NOAA Ocean Exploration)

>1,800 m

Dive depth cited by NOAA Ocean Exploration

Figures sourced from IUCN Red List — Monodon monoceros (Lowry, Laidre & Reeves, 2017, Least Concern), IUCN Red List — categories and criteria, NOAA Ocean Exploration — What is a narwhal? and other references on this page.

Narwhal: Quick Facts

Vital statistics and key facts about the Narwhal
Also called Narwhal — name often linked to Old Norse 'corpse whale'
Tusk Left canine, 2–3 m in most males (NOAA); not a horn
Dive depth Deeper than 1,800 m (NOAA Ocean Exploration)
IUCN Least Concern (2017)
Canada (COSEWIC) Not at Risk (May 2024)
CITES Appendix II
Closest living relative on this site Beluga (same family; no dedicated guide yet) — whale hub
WARN programmes None — education only

Scientific Classification

Scientific classification of the Narwhal
Kingdom Animalia
Phylum Chordata
Class Mammalia
Order Artiodactyla
Infraorder Cetacea
Family Monodontidae
Genus Monodon
Species Monodon monoceros

Conservation Status

IUCN Status
Least Concern globally (IUCN 2017). COSEWIC Not at Risk in Canada (2024). CITES Appendix II.
Population
IUCN 2017: more than 170,000 in surveyed stocks, about 123,000 mature; Russian Arctic and some Greenland waters not in that sum
Trend
Mixed by stock; IUCN 2017: one increasing, five stable, five unknown
Assessed
2017 (IUCN); COSEWIC May 2024
CITES
Appendix II

Least Concern replaced Near Threatened. Some subpopulations still warrant separate assessment. Harvest in Canada is Inuit-only and co-managed. Ice loss, shipping and noise are rising pressures, not a second IUCN badge.

Did you know?

The tusk is the structural inverse of a human tooth in one useful sense: rigid in the centre, porous outside, so ocean water can reach living pulp. That is dentistry, not a unicorn.

Key Facts: Narwhal

  • Monodon monoceros is an Arctic toothed whale in family Monodontidae with the beluga. The tusk is a tooth, not a horn.
  • IUCN listed it Least Concern in 2017: more than 170,000 animals in surveyed stocks, about 123,000 mature. That replaced Near Threatened.
  • COSEWIC redesignated Canadian narwhal Not at Risk in May 2024. Hunting in Canada is Inuit-only and co-managed.
  • NOAA cites dives deeper than 1,800 metres and winter feeding on Greenland halibut, polar and Arctic cod, shrimp and Gonatus squid.
  • The tusk can sense salinity (Nweeia and colleagues, 2014) and is also used in male social behaviour. Those functions are not rivals.
  • WARN does not run narwhal programmes. This guide is education. Habitat appeals sit at /appeals/habitats/.

How to use this narwhal species guide

Match the query to the right WARN page. This URL is species facts: what a narwhal is, tusk versus horn, Least Concern versus CITES II, dive depth, ice and the beluga comparison. Ivory shops, Arctic tourism and whale-watching bookings are different jobs. Use the table and the links below rather than mixing those intents.

  1. 1

    Confirm it is a toothed whale, not a unicorn

    Stay here for Monodon monoceros. The tusk is a canine tooth. Other whales: whale. Orca: orca. Sperm whale: sperm whale.

  2. 2

    Read Least Concern together with ice and trade rules

    IUCN 2017 is Least Concern because surveyed abundance is large. CITES Appendix II still requires non-detriment findings for international trade. COSEWIC 2024 is Not at Risk in Canada. Those facts sit together. They do not cancel shipping noise or climate risk.

  3. 3

    Do not buy 'unicorn horn'

    Historic European cabinets sold narwhal tusks as unicorn horn. Modern international trade is regulated, not a souvenir loophole. This page is not a permitting desk.

  4. 4

    Give only if that is the intent, and through honest doors

    WARN does not fund Arctic cetacean fieldwork or Inuit co-management. Habitat grants: habitat protection appeal. Closest marine appeal: sea turtle appeal. Gifts are not Gift Aid eligible. See registration status.

What is a narwhal?

A narwhal is a toothed whale, Monodon monoceros, found only in Arctic waters. NOAA Ocean Exploration describes it as a medium-sized odontocete with no functional teeth in the mouth. The famous tusk is the exception: usually the left canine of a male, growing through the lip.

Skin starts dark in calves and becomes mottled; old males can look almost white on the belly. The common name is often linked to an Old Norse 'corpse whale'. They travel in groups and are hard to study: dark winters, ice cover, remote coasts.

This page is the species encyclopaedia. It is not a Pond Inlet booking. Whale hub: whale.

WARN publishes free cetacean education. It does not tag narwhals.


Is a narwhal tusk a horn?

No. It is a tooth — typically the left canine — that grows in a counterclockwise spiral two to three metres out of the upper jaw in most males (NOAA). A minority of males grow two. Females almost never grow an erupted tusk.

Martin Nweeia and colleagues (The Anatomical Record, 2014), working with Smithsonian and Fisheries and Oceans Canada collaborators, showed that ocean water can reach inner dentine through porous cementum, and that changing salinity at the tusk surface changes heart rate. That is sensory biology, not a unicorn.

NOAA also treats the tusk as a social tool among males. Rubbing tusks is real. Jousting-to-the-death is a cartoon. Do not pick one paper as the only function.

This URL will not sell a tusk as a horn.


Are narwhals endangered?

Not on the global IUCN badge. Lowry, Laidre and Reeves assessed Monodon monoceros as Least Concern on 3 July 2017, published 2017. They combined surveyed subpopulations to more than 170,000 whales and about 123,000 mature individuals, with 12 subpopulations. Northeast Greenland and the Russian Arctic lacked estimates. One subpopulation was thought to be increasing, five stable, five unknown. The species as a whole did not meet a threatened IUCN category.

That replaced Near Threatened. Least Concern is not 'no pressure'. The same assessment said some subpopulations warrant their own Red List work. Climate, ice, shipping, seismic noise and harvest all still appear in the literature.

Canada's COSEWIC redesignated the species Not at Risk in May 2024, after Special Concern in 2004. CITES Appendix II remains the trade rule.

This page will not pretend a UK gift buys a named Arctic whale.


How deep do narwhals dive?

Among the deepest of marine mammals. NOAA Ocean Exploration cites dives deeper than 1,800 metres and long periods below 800 metres. Older popular pages often print 1,500 metres. Use NOAA's figure, not a round magazine number.

They are built for pressure: flexible ribs, oxygen stored in muscle and blood. They breathe at ice cracks too narrow for boats — habitat other whales rarely use.

This is not a freediving contest. A tagged maximum is not a species mean.

WARN does not run a Baffin Bay dive programme.


Where do narwhals live?

High Arctic waters, especially around Canada and Greenland, with animals also off Svalbard. The Russian Arctic is part of the range on paper and poorly counted. They summer in coastal bays and fiords and winter in offshore pack ice over deep water.

IUCN 2017 did not include Northeast Greenland or the Russian Arctic in the global sum. COSEWIC 2024 treats Canadian animals — Northern Hudson Bay and Baffin Bay — as about 90% of the surveyed global total.

The related appeal explains potential support and the current funding status; this guide does not confirm a WARN grant. Habitat work this organisation funds is a different geography: habitat protection appeal.

This site will not identify a holiday snapshot from a floe edge.


What do narwhals eat?

NOAA lists Greenland halibut, polar and Arctic cod, shrimp and Gonatus squid as primary prey. Diet shifts with the season. Narwhals feed hard in winter under ice and eat little in the ice-free summer — the opposite of many sub-Arctic whales that feed in summer.

They suction-feed. There are no functional teeth in the mouth to chew with. The tusk is not a fishing spear in the cartoon sense.

This is not a feeding chart for a named aquarium animal. Captive narwhals are not a WARN husbandry topic.

If the query was orca diet, that is orca.


Do female narwhals have tusks?

Almost never, in NOAA's wording. Most erupted tusks are on males. A small share of females grow one. Some males lack an erupted tusk entirely. Two tusks happen.

Do not use presence of a tusk as a field sexing rule on a distant animal. Do not treat a tuskless adult as a different species.

This page is not a trophy guide.

WARN does not measure tusks.


How is a narwhal different from a beluga?

Both are Monodontidae: Arctic toothed whales with a rounded melon and no dorsal fin. Belugas are white as adults and lack the spiral tusk. Narwhals stay mottled longer and carry the canine tusk in most males. They overlap in some Arctic waters and are managed together in some international working groups. They are not one species.

Orcas are oceanic dolphins that increasingly use ice-free Arctic water as predators. Sperm whales are a different family and a different dive story. See the comparison table.

There is no dedicated beluga guide on this site yet. Whale hub: whale.

Do not stack every pale Arctic whale into one unicorn bin.


How long do narwhals live?

COSEWIC's 2024 Canadian assessment cites longevity that may reach about 101 years, females maturing around 8–9 years, males later, gestation about 14–15 months, and a calf on the order of every three years. Treat 101 as an upper figure in that report, not a typical wild mean and not a named-animal census.

IUCN 2017 is a status assessment, not a life-table. Do not copy a zoo fact-box onto Baffin Bay.

This URL is not a memorial page for a named whale.

Slow life history is why harvest and ice change are not hobbies.


How big is a narwhal?

NOAA calls it medium-sized among toothed whales and gives the tusk as two to three metres. Do not use tusk length as body length. That swap is how thin FAQs print 'about 3 m' as if it were the whale.

Body length excluding tusk is larger than the tusk; this page will not invent a centimetre-precise total from a magazine. The animal is a whale, not a dolphin-sized toy.

A calf is a calf. Gestation is about 14–15 months in the COSEWIC 2024 summary.

WARN does not publish a weekly length chart.


Does WARN work with narwhals?

No. WARN does not tag narwhals, set harvest quotas, break ice or run Nunavut or Greenland programmes. This educational guide does not establish a WARN-funded Arctic programme. This guide exists so readers and answer engines can cite biology without mixing it with a fake WARN narwhal appeal.

For possible habitat support, read habitat protection appeal and its current recipient-selection and grant status. A marine-adjacent appeal is sea turtle appeal. Neither is narwhal rescue. Donation amounts are contributions, not a verified price for whale care.

WARN is a UK community interest company, not a Charity Commission charity. Gifts are not Gift Aid eligible. US donors: WARN is not a 501(c)(3). Details: registration status.

Do not post parcels of muktuk, or treat another site's donate button as this page.

Narwhal vs beluga vs orca vs sperm whale

Narwhal vs beluga vs orca vs sperm whale
FeatureNarwhalBelugaOrcaSperm whale
Scientific nameMonodon monocerosDelphinapterus leucasOrcinus orcaPhyseter macrocephalus
FamilyMonodontidaeMonodontidaeDelphinidaePhyseteridae
Tusk / teethMale canine tusk 2–3 mNo tusk; many small teethConical teeth; no spiral tuskLower-jaw teeth; no narwhal tusk
Core rangeHigh Arctic iceArctic and sub-ArcticAll oceans (see orca guide)Deep oceans worldwide
IUCN (this page's focal taxon)Least Concern (2017)Not this pageData Deficient globally (see orca guide)Vulnerable (see sperm whale guide)
CITESAppendix IINot the narwhal's listingSee the orca guideAppendix I
WARN programmeEducation onlyEducation onlyEducation onlyEducation only

What WARN Does

WARN publishes this narwhal guide as free species education. We do not run Arctic cetacean tagging, quota science or ice-edge fieldwork. Least Concern on paper still depends on ice, quiet water and co-managed harvest — that work is not a WARN programme. Habitat grants, if you want to give, sit on a separate URL.

WARN does not fund Arctic cetacean tagging or narwhal harvest science. A gift at /appeals/habitats/ supports partner habitat work — not a named-narwhal invoice. Not Gift Aid eligible.

Narwhal: Frequently Asked Questions

Is a narwhal tusk a horn?

No. It is a tooth — usually the left canine — that grows through the upper lip in most males as a counterclockwise spiral two to three metres long. NOAA Ocean Exploration uses that description. A minority of males grow two tusks. Females almost never do. Unicorn-horn cabinets were a European trade myth, not taxonomy.

Are narwhals endangered?

IUCN 2017 is Least Concern, replacing Near Threatened. Surveyed stocks summed to more than 170,000 animals and about 123,000 mature individuals. COSEWIC redesignated Canadian narwhal Not at Risk in May 2024. CITES Appendix II still regulates tusk trade. Least Concern is not a claim that ice and shipping noise do not matter.

How deep do narwhals dive?

NOAA Ocean Exploration cites dives deeper than 1,800 metres and long periods below 800 metres. That is among the deepest mammal dives. Older pages often print 1,500 metres. Use the NOAA figure, not a round magazine number. They breathe at narrow ice cracks, not in open tropical seas.

Where do narwhals live?

Only in Arctic waters, especially Canada and Greenland, with animals also off Svalbard. The Russian Arctic is poorly counted. They summer in bays and winter in offshore pack ice. WARN does not manage those waters. See whale for the wider cetacean hub.

What do narwhals eat?

NOAA lists Greenland halibut, polar and Arctic cod, shrimp and Gonatus squid. They feed hard in winter under ice and little in the ice-free summer — the reverse of many sub-Arctic whales. They suction-feed. The tusk is not a fishing spear. This is not an aquarium menu.

Do female narwhals have tusks?

Almost never. NOAA says females almost never have a tusk. Most erupted tusks are on males. Some males lack one. A few animals grow two. Do not sex a distant whale by tusk alone, and do not treat a tuskless adult as a different species.

How long do narwhals live?

COSEWIC 2024 cites longevity that may reach about 101 years, with females maturing around 8–9 years and a calf on the order of every three years after a 14–15 month gestation. Treat 101 as an upper figure in that report, not a typical mean and not a named-animal census. IUCN 2017 does not print a zoo lifespan.

How big is a narwhal?

It is a medium-sized toothed whale. NOAA gives the male tusk as two to three metres. Do not use that tusk length as the whale's body length — that is a swapped FAQ, not a measurement. A calf is a calf. This page is not a crate-size chart.

Are narwhals dangerous?

They are wild whales, not a public-health predator of people. A handled or entangled animal can injure someone. Give wild individuals space; do not approach breathing holes by machine for a photo. This page is not a floe-edge safety manual and not a claim they are theme-park animals.

Is the narwhal on CITES?

Yes. Monodon monoceros is on Appendix II, which regulates international commercial trade in live animals and parts, including tusks. That is not an IUCN Endangered badge. The US Marine Mammal Protection Act blocks imports of narwhal products. This page is not a permitting desk.

Are narwhals the same as belugas?

No. They are different species in the same family, Monodontidae. Belugas are white as adults and lack the spiral tusk. Narwhals stay mottled and most males grow the canine tusk. They can overlap in Arctic water. Orca: orca. Sperm whale: sperm whale.

Can Inuit hunt narwhals?

In Canada, yes, under co-management: only Inuit are authorised, with community limits, wildlife boards and Fisheries and Oceans Canada (COSEWIC 2024). That is not a UK souvenir licence. International export still needs CITES paperwork. WARN does not set quotas and does not oppose Indigenous subsistence as if it were commercial whaling.

Why is it called a corpse whale?

NOAA traces the English name to Old Norse: 'nar' for corpse and 'hval' for whale, from mottled skin that can look like a drowned sailor. It is etymology, not a conservation status. The scientific name Monodon monoceros means one tooth, one horn — and the 'horn' is still a tooth.

How many narwhals are left?

There is no named-animal census. IUCN 2017 summed surveyed stocks to more than 170,000 animals and about 123,000 mature. COSEWIC 2024 cites about 161,100 in Canada. NAMMCO compilations sit in the same order of magnitude. Unknown in unsurveyed Russian and some Greenland waters. Do not treat a pre-2017 round figure as current.

Does WARN rescue narwhals?

No. WARN does not tag, translocate or fund Arctic cetacean programmes. This guide is education. If you are considering a gift, read habitat protection appeal for the proposed support, recipient-selection status and donation terms — that is not narwhal rescue. WARN is a UK CIC; gifts are not Gift Aid eligible. See registration status.

Is a narwhal a dolphin?

It is a toothed whale (odontocete), in family Monodontidae with belugas, not in the oceanic dolphin family Delphinidae. Orcas are the largest oceanic dolphins: orca. Everyday English says 'whale'. The honest sentence is: a narwhal is an Arctic odontocete, not a bottlenose.

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