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  2. List of sharks - Wikipedia

    en.wikipedia.org/wiki/List_of_sharks

    The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...

  3. Sharkbook - Wikipedia

    en.wikipedia.org/wiki/Sharkbook

    Sharkbook is a global database for identifying and tracking sharks, particularly whale sharks, using uploaded photos and videos.In addition to identifying and tracking sharks, the site allows people to "adopt a shark" and get updates on specific animals.

  4. Shark - Wikipedia

    en.wikipedia.org/wiki/Shark

    The value of shark fins for shark fin soup has led to an increase in shark catches where usually only the fins are taken, while the rest of the shark is discarded, typically into the sea; health concerns about BMAA in the fins now exists regarding consumption of the soup A 4.3-metre (14 ft), 540-kilogram (1,200 lb) tiger shark caught in Kāne ...

  5. Sandbar shark - Wikipedia

    en.wikipedia.org/wiki/Sandbar_shark

    The sandbar shark is one of the largest coastal sharks in the world, and is closely related to the dusky shark, the bignose shark, and the bull shark. Its dorsal fin is triangular and very high, and it has very long pectoral fins. Sandbar sharks usually have heavy-set bodies and rounded snouts that are shorter than the average shark's snout.

  6. Outline of sharks - Wikipedia

    en.wikipedia.org/wiki/Outline_of_sharks

    A shark, also called a "selachimorph", can be described as all of the following: Animal – multicellular, eukaryotic organism of the kingdom Animalia or Metazoa. An animal's body plan eventually becomes fixed as it develops, although some types of animal undergo a process of metamorphosis later on in their life.

  7. Shark tooth - Wikipedia

    en.wikipedia.org/wiki/Shark_tooth

    Identification of most sharks are found through a combination of tooth counts and tooth shapes. Teeth can even lead to the identification of shark species like the requiem shark. The fossilized records of teeth helps illustrate evolutionary history, and isolated teeth are used to study and analyze specific linear measurements of the species. [21]

  8. Galapagos shark - Wikipedia

    en.wikipedia.org/wiki/Galapagos_shark

    A Galapagos shark off Kure Atoll in the Hawaiian Islands. The Galapagos shark is often the most abundant shark in shallow island waters. [7] In their original description of this species, Snodgrass and Heller noted that their schooner had taken "several hundred" adult Galapagos sharks and that "thousands" more could be seen in the water. [3]

  9. Sand tiger shark - Wikipedia

    en.wikipedia.org/wiki/Sand_tiger_shark

    The sand tiger shark (Carcharias taurus), grey/gray nurse shark, spotted ragged-tooth shark, or blue-nurse sand tiger, is a species of shark that inhabits subtropical and temperate waters worldwide. It inhabits the continental shelf , from sandy shorelines (hence the name sand tiger shark) and submerged reefs to a depth of around 191 m (627 ft ...