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seahorse : any of a genus (Hippocampus of the family Syngnathidae) of small bony fishes that have the head angled downward toward the body which is carried vertically and are equipped with a prehensile tail — Merriam-Webster   See also   OneLook


Seahorse (also written sea-horse and sea horse) is the name given to 45 species of small marine fishes in the genus Hippocampus. Having a head and neck suggestive of a horse, seahorses also feature segmented bony armour, an upright posture and a curled prehensile tail. — Wikipedia

Seahorse (Encyclopædia Britannica)

About Seahorses (Project Seahorse)
Seahorse Taxonomy (Project Seahorse)

Seahorses (One Zoom)
Hippocampus (Catalogue of Life)
Seahorse (WolframAlpha)




Ichthyology, also called fish science, is the branch of zoology devoted to the study of fish, including jawless fish (Agnatha), cartilaginous fish (Chondrichthyes) and bony fish (Osteichthyes). According to FishBase, 33,400 species of fish had been described as of October 2016, with approximately 250 new species described each year. — Wikipedia

Ichthyology (Encyclopædia Britannica)

FishBase (R. Froese & D. Pauly)
Eschmeyer’s Catalog of Fishes (California Academy of Sciences)

Seahorse: Hippocampus Erectus (Florida Museum of Natural History)



iSeahorse (Project Seahorse)


DDC: 597.6798 Seahorses (Library Thing)
Subject: Seahorses (Library Thing)

Subject: Seahorses (Open Library)

LCC: QL 638.S9 Seahorses (UPenn Online Books)
Subject: Seahorses (UPenn Online Books)

LCC: QL 638.S9 Seahorses (Library of Congress)
Subject: Seahorses (Library of Congress)

Subject: Seahorses (WorldCat)




MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)


American Society of Ichthyologists and Herpetologists
Zoological Association of America
Association of Zoos and Aquariums


Seahorse (EurekaAlert, American Association for the Advancement of Science)
Seahorse (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Seahorses (JSTOR)
Seahorse (Science Daily)
Seahorse (Science News)
Seahorse (
Seahorse (NPR Archives)


Fish & Sharks (Northeast Fisheries Science Center, NOAA Fisheries)


Seahorse (


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    Teleost fish encompass a diverse group, among which seahorses display a unique morphology. The characteristic spines and brood pouch seen in seahorses feature distinctive epithelial cells—called flame cone cells—covered by a mucous cap.

  • The seahorse has two tendons that allows it to...
    on April 12, 2023 at 3:00 pm

    A trio of marine scientists from Brown University, the Inter-University of Marine Science and the Rochester Institute of Technology has found that the seahorse has two elastic tendons that allows it to lift its head and suck in prey at very high speed. In their study, reported in Proceedings of the Royal Society B, Corrine Avidan, Steven Day and Roi Holzman studied seahorses as they fed to learn more about how they are able to capture prey so quickly.


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