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  3. Hawaiian Monk Seal

One of the 13 seals on WAnimals

Hawaiian Monk Seal (Neomonachus schauinslandi)

Mammals · Carnivora · Phocidae

Hawaiian Monk Seal

Neomonachus schauinslandi

Endangered

At very high risk of extinction in the wild in the near future.

Spotted something wrong?

The Hawaiian monk seal is one of the most threatened pinnipeds on the planet and one of only two land mammals endemic to Hawaii, along with the bat Lasiurus semotus. It lives mainly on the uninhabited islands of the north-west of the archipelago, though a growing share of the population now breeds on the main islands. It dives for octopus, lobster, eels and reef fish, often to more than 100 metres. After decades of decline, the population has been slowly recovering for several years.

Weight

150 kg – 270 kg

Size

2.1 m – 2.4 m

Life expectancy

30 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Diurnal

Active mainly during the day.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Estimated population

Some 1,600 individuals (a NOAA Fisheries estimate)

OceanIslands
1countries3parks3dive sites14same family

AI-generated images: illustrations, not photographs.

Fun facts

  • In Hawaiian it is called ilio holo i ka uaua, meaning the dog that runs in rough water.
  • It is one of only two tropical seals left: its Caribbean relative became extinct in the 20th century and the Mediterranean one remains endangered.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (mammal)
Habitat and environment
Sandy beaches, islets and shallow reefs of the Hawaiian archipelago
Sexual maturity
5 years
Gestation / incubation
11 months
Litter / clutch size
1

Sources consulted: Wikipedia (es): Neomonachus schauinslandi

Where to find it

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The pins mark the parks and dive sites where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented.

Related species

Other species in the catalogue with the most in common with Hawaiian Monk Seal — same habitat, park, country, tags or family.

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How to help

The hawaiian monk seal is classified as endangered. Organisations such as the IUCN, WWF and the Wildlife Conservation Society work specifically on its conservation and that of its habitat; looking into their programmes is a good starting point if you want to get involved.

It's documented in 4 protected areas — one reason why protecting these places matters for its conservation.

Keep exploring

Based on what we already know about hawaiian monk seal.

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See full glossary
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ParksHawaii VolcanoesUnited States
TagsCarnivore
Carnivore
Diurnal
Solitary
Endangered
Ocean
Islands
Mammal
United States