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  2. Shark anatomy - Wikipedia

    en.wikipedia.org/wiki/Shark_anatomy

    The tail of a shark consists of the caudal peduncle and the caudal fin, which provide the main source of thrust for the shark. Most sharks have heterocercal caudal fins, meaning that the backbone extends into the (usually longer) upper lobe. The shape of the caudal fin reflects the shark's lifestyle, and can be broadly divided into five categories:

  3. Blacktip reef shark - Wikipedia

    en.wikipedia.org/wiki/Blacktip_reef_shark

    The blacktip reef shark (Carcharhinus melanopterus) is a species of requiem shark, in the family Carcharhinidae, which can be easily identified by the prominent black tips on its fins (especially on the first dorsal fin and its caudal fin). Among the most abundant sharks inhabiting the tropical coral reefs of the Indian and Pacific Oceans, this ...

  4. Fish anatomy - Wikipedia

    en.wikipedia.org/wiki/Fish_anatomy

    Caudal/Tail fins: Also called the tail fins, caudal fins are attached to the end of the caudal peduncle and used for propulsion. The caudal peduncle is the narrow part of the fish's body. The hypural joint is the joint between the caudal fin and the last of the vertebrae. The hypural is often fan-shaped.

  5. Basking shark - Wikipedia

    en.wikipedia.org/wiki/Basking_shark

    The caudal fin has a strong lateral keel and a crescent shape. Other common names include bone shark, elephant shark, sailfish, and sunfish. In Orkney, it is called hoe-mother (contracted homer), meaning "the mother of the piked dogfish". [5] The basking shark is a cosmopolitan migratory species found in

  6. Broadnose sevengill shark - Wikipedia

    en.wikipedia.org/wiki/Broadnose_sevengill_shark

    This shark has a large, thick body, with a broad head and blunt snout. The top jaw has jagged, cusped teeth and the bottom jaw has comb-shaped teeth. Its single dorsal fin is set far back along the spine towards the caudal fin, and is behind the pelvic fins. In this shark the upper caudal fin is much longer than the lower, and is slightly ...

  7. Porbeagle - Wikipedia

    en.wikipedia.org/wiki/Porbeagle

    A second, shorter pair of keels are present below the main keels. The caudal fin is large and crescent-shaped, with the lower lobe almost as long as the upper; both dorsal and ventral depressions (precaudal pits) are at the caudal fin base, and a deep ventral notch is near the tip of the upper caudal fin lobe. [7]

  8. Speartooth shark - Wikipedia

    en.wikipedia.org/wiki/Speartooth_shark

    [7] [11] Very little is known about the feeding habits of adults, but many bony fish spines and a stingray spine were found embedded in the jaws of the only documented adult female. [10] As in other requiem sharks, the speartooth shark is viviparous: when the developing embryo exhausts its supply of yolk, the yolk sac develops into a placental ...

  9. Fish fin - Wikipedia

    en.wikipedia.org/wiki/Fish_fin

    The caudal fin is the tail fin (from the Latin cauda meaning tail), located at the end of the caudal peduncle. It is used for propulsion in most taxa (see also body-caudal fin locomotion). The tail fin is supported by the vertebrae of the axial skeleton and pterygiophores (radials). Depending on the relationship with the axial skeleton, four ...