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Great Hammerhead

Fish

The great hammerhead is the largest of the hammerhead shark species, found in warm coastal and offshore waters around the world, unmistakable for its wide, flattened head, called a cephalofoil, which is straighter and less curved than in smaller hammerhead relatives. The unusual head shape spreads its sensory organs over a wider area, helping it detect the electrical signals of prey buried in sand, particularly stingrays, which form a major part of its diet along with other fish, squid and crustaceans. Great hammerheads are solitary, highly mobile predators capable of long migrations between habitats, and they can grow to among the largest sizes recorded for any hammerhead. Heavily targeted for its large fins in the shark fin trade and vulnerable to accidental capture in fisheries, the species has undergone steep population declines and is now classified as critically endangered.

Facts
Classification
Diet
Carnivore 2
System (Realm)
Marine 3
Relationship to People
Hunted or Fished 4
Living or Extinct
Yes 1
Derived from this species' own Conservation Status: this atlas's IUCN category list has no Extinct value, so a set conservation-status is itself evidence of living status.
Identification
Distinguishing Appearance
The great hammerhead can be distinguished from other hammerheads by the shape of its cephalofoil, which is wide with an almost straight front margin, its tall, sickle-shaped first dorsal fin, and its strongly falcated pelvic fins. 1
Comparison
NatureServe Rank
G3 Vulnerable 5
CITES Appendix
Appendix II 6
Scientific Name
Sphyrna mokarran 1
Conservation Status
Critically Endangered 1
Connections

Child Taxon Of

Chondrichthyes, Taxa
Source Wikidata: Great Hammerhead

In Biome

Marine, Biomes
Source Great Hammerhead (Wikipedia)

In Ecosystem

Source Wikidata: Great Hammerhead
Additional Source Great Hammerhead (Wikipedia)Article text
In the Other Atlases

Found In

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Also in Geography Atlas: where this subject is found.

Sources
1. Great Hammerhead (Wikipedia)
Wikimedia Foundation
  • Wikipedia article, opening sentence
    The great hammerhead (Sphyrna mokarran) is the largest species of hammerhead shark, belonging to the family Sphyrnidae
  • Wikipedia article, lead section, third paragraph, IUCN assessment sentence
    it has been assessed as critically endangered by the International Union for Conservation of Nature (IUCN) as of 2019
  • Wikipedia article, lead section, second paragraph, hammer-shape description
    The great hammerhead can be distinguished from other hammerheads by the shape of its "hammer" (called the "cephalofoil"), which is wide with an almost straight front margin, its tall, sickle-shaped first dorsal fin, and its strongly falcated pelvic fins
  • Category: Fauna listed on CITES Appendix II
  • In Biome: Marine, Wikipedia 'Great hammerhead': found around the globe in all the warmer parts of the oceans
  • In Ecosystem: Coral Reef Systems, Article text
    They favor coral reefs, but also inhabit continental shelves, island terraces, lagoons, and deep water near land.
View the Source
2. Wikipedia: Great Hammerhead
Wikipediasystem (MediaWiki batch-API article extract states it plainly, diet)
Quote, system (MediaWiki batch-API article extract states it plainly, diet)
A solitary, strong-swimming apex predator, the great hammerhead feeds on a wide variety of prey ranging from crustaceans and cephalopods, to bony fish, to smaller sharks.
View the Source
3. GBIF Species API
GBIF Species APIView the Source
4. Great hammerhead (Wikipedia)
heavily fished for its large fins, valuable on the Chinese market for shark fin soupView the Source
5. NatureServe Explorer: Sphyrna mokarran
NatureServe ExplorerGlobal rank (roundedGRank)
Quote, Global rank (roundedGRank)
"roundedGRank": "G3"
View the Source
6. Animal Diversity Web, University of Michigan Museum of Zoology: Sphyrna mokarran (Animal Diversity Web)
Animal Diversity Web, University of Michigan Museum of ZoologyConservation Status: CITES
Quote, Conservation Status: CITES
CITES Appendix II
View the Source
Wikidata: Great Hammerhead
  • Wikidata Q757353, class allow-list match (w-wdresolver-0926)
  • Child Taxon Of: Chondrichthyes, Wikidata parent-taxon (P171) chain
View the Source
FishBase: Sphyrna mokarran (FishBase)
FishBaseCITES
Quote, CITES
Appendix II: International trade monitored
View the Source
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