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Smooth hammerhead shark (Sphyrna zygaena)
제목: Smooth hammerhead shark (Sphyrna zygaena)
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Ichthyologie; ou, Histoire naturelle des poissons (Plate 117) (6918381652) Smooth hammerhead shark (Sphyrna zygaena).jpg
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Smooth hammerhead shark (Sphyrna zygaena)


Sphyrna zygaena syn. Squalus zygaena
Date 1796
Source https://www.flickr.com/photos/biodivlibrary/6918381652
Author Marcus Elieser Bloch
Full title Ichthyologie; ou, Histoire naturelle des poissons : En six parties avec 216 planches dessinées et enluminées d'après nature / par Marc Éliéser Bloch.
Source: https://commons.wikimedia.org/wiki/File%3AIchthyologie%3B_ou%2C_Histoire_naturelle_des_poissons_%28Plate_117%29_%286918381652%29.jpg

The smooth hammerhead shark (Sphyrna zygaena) is a species of hammerhead shark, and part of the family Sphyrnidae. This species is named "smooth hammerhead" because of the distinctive shape of the head, which is flattened and laterally extended into a hammer shape (called the "cephalofoil"), without an indentation in the middle of the front margin (hence "smooth"). Unlike other hammerheads, this species prefers temperate waters and occurs worldwide at medium latitudes. In the summer, these sharks migrate towards the poles following cool water masses, sometimes forming schools numbering in the hundreds to thousands. (Wikipedia)

Order: Carcharhiniformes
Family: Sphyrnidae
Genus: Sphyrna
Species: Sphyrna zygaena (Linnaeus, 1758)
Synonyms
    Squalis pictus Blainville, 1816
    Squalus carolinensis Blainville, 1816
    Squalus zygaena Linnaeus, 1758
    Zygaena malleus Valenciennes, 1822
    Zygaena subarcuata Storer, 1848
    Zygaena vulgaris Cloquet, 1830

Smooth hammerhead shark
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