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  2. Shark anatomy - Wikipedia

    en.wikipedia.org/wiki/Shark_anatomy

    Shark Anatomy (50693674756) The gill slits of a whale shark flaring as it expels water from its pharyngeal cavity. In the shark anatomy image, it depicts the beginning half of the shark, including the gills. The shark gills are especially important and were evolved from the chordate pharyngeal gill slits synapomorphy.

  3. Outline of sharks - Wikipedia

    en.wikipedia.org/wiki/Outline_of_sharks

    Shark cartilage – material that a sharks' skeleton is composed of; Shark teeth; Spiracle – pumps water across gills; Clasper – the anatomical structure that male sharks use for mating; Fish anatomy – generic description of fish anatomy

  4. Shark - Wikipedia

    en.wikipedia.org/wiki/Shark

    Shark skeletons are very different from those of bony fish and terrestrial vertebrates. Sharks and other cartilaginous fish (skates and rays) have skeletons made of cartilage and connective tissue. Cartilage is flexible and durable, yet is about half the normal density of bone. This reduces the skeleton's weight, saving energy. [29]

  5. Hammerhead shark - Wikipedia

    en.wikipedia.org/wiki/Hammerhead_shark

    This is an accepted version of this page This is the latest accepted revision, reviewed on 22 December 2024. Family of sharks Hammerhead sharks Temporal range: Early Miocene – recent PreꞒ Ꞓ O S D C P T J K Pg N Scalloped hammerhead Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Chondrichthyes Subclass: Elasmobranchii Order: Carcharhiniformes ...

  6. Gill slit - Wikipedia

    en.wikipedia.org/wiki/Gill_slit

    Gill slits on a grey reef shark 4 = Gill slits on a lamprey. Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover.Such gills are characteristic of cartilaginous fish such as sharks and rays, as well as deep-branching vertebrates such as lampreys.

  7. Clasper - Wikipedia

    en.wikipedia.org/wiki/Clasper

    The claspers of a spotted wobbegong shark (Orectolobus maculatus) The claspers of a young spinner shark (Carcharhinus brevipinna) In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating. A close up view of a chimaera clasper (Hydrolagus collie). Note the many small tooth-like projections covering the ...

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  9. Portal:Sharks - Wikipedia

    en.wikipedia.org/wiki/Portal:Sharks

    Welcome to the shark portal! Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the Batoidea (rays and kin).

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