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  3. Megamouth Shark

Megamouth Shark (Megachasma pelagios)

Cartilaginous fish · Lamniformes · Megachasmidae

Megamouth Shark

Megachasma pelagios

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The megamouth shark, wide-mouthed shark or big-mouth shark is a species of lamniform fish of the family Megachasmidae. It is a rare species that was discovered on 15 November 1976, when at Kaneohe (Hawaii) the crew of the ship AFB-14 found a specimen tangled in a sea anchor. Its scientific description as a new species was published in 1983 by Taylor, Compagno and Struhsaker.

Weight

600 kg – 1.2 t

Size

4 m – 5.6 m

Life expectancy

100 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Irregular activity

Active at irregular times, by day or night depending on circumstances.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Easy

Ocean
110countries2dive sites

AI-generated images: illustrations, not photographs.

Fun facts

  • GeneralDiscovered in 1976; it filters plankton through a mouth over 1 m wide.
  • It was discovered by accident in 1976, when one became tangled in the anchor of a United States Navy vessel off Hawaii: it was one of the most surprising zoological finds of the twentieth century, a shark of more than four metres that was completely unknown.
  • Since then little more than a hundred individuals have been recorded worldwide, and every sighting is still scientific news.
  • It makes daily vertical migrations: it spends the day several hundred metres down and rises at night into surface layers following the krill and plankton it filter-feeds on.

Life cycle and biology

Skeleton type
Vertebrate - cartilaginous skeleton (fish)
Habitat and environment
Deep oceanic waters of every ocean; it rises to the surface layers at night

Sources consulted: https://es.wikipedia.org/wiki/Megachasma_pelagios

Where to find it

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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 Megamouth Shark — same habitat, park, country, tags or family.

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Based on what we already know about megamouth shark.

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One of the 26 sharks on WAnimals
See full glossary
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The pins mark the dive sites where its presence is documented.

See its range on the interactive map→
Kenting National ParkTaiwan
Sagami BayJapan
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Myrichthys colubrinus

CountriesJapan
TagsCarnivore
Carnivore
Variable activity
Solitary
Fish
Ocean

North America33

Asia23

Africa20

Europe17

South America11

Oceania6

Japan
Taiwan
Albania
Algeria
Angola
Anguilla
Anguilla
Antigua and Barbuda
Aruba
Bahamas
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Cayman Islands
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
Greenland
Grenada
Guadeloupe
Haiti
Honduras
Jamaica
Martinique
Mexico
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and Grenadines
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States
Bangladesh
China
India
Indonesia
Israel
Japan
Lebanon
Malaysia
Maldives
Myanmar
Oman
Pakistan
Philippines
Russia
Saudi Arabia
South Korea
Sri Lanka
Syria
Taiwan
Thailand
Türkiye
Vietnam
Yemen
Algeria
Angola
Cabo Verde
Egypt
Gabon
Ghana
Kenya
Libya
Madagascar
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Mozambique
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Senegal
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Sudan
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Albania
Bosnia and Herzegovina
Croatia
Cyprus
France
Greece
Iceland
Ireland
Italy
Malta
Monaco
Montenegro
Norway
Portugal
Slovenia
Spain
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Argentina
Brazil
Chile
Colombia
Ecuador
French Guiana
Guyana
Peru
Suriname
Uruguay
Venezuela
Australia
Fiji
French Polynesia
New Caledonia
New Zealand
Papua New Guinea