Knowra Requiem shark Requiem shark A requiem shark is a member of the family Carcharhinidae, a diverse group of mostly coastal and open-water sharks that includes tiger, bull, and blacktip sharks.
Carcharhinidae : A family of ground sharks that includes tiger, bull, whaler, and hammerhead sharks. This is the taxonomic family to which requiem sharks belong.
Shark locomotion : The biomechanics by which sharks generate thrust and control movement in water. Carcharhinid body shapes and tails support sustained swimming and rapid turns.
Tiger shark : A large carcharhinid shark, Galeocerdo cuvier, recognized by dark vertical bars, especially when young. It is a distinctive, broad-diet member of the requiem shark family.
Shark finning : The removal of a shark's fins, often followed by discarding its body at sea. Finning has contributed to declines in several commercially targeted requiem sharks.
Shark : A cartilaginous fish with a skeleton made mainly of cartilage and multiple exposed gill slits. Requiem sharks are one family within the broader shark lineage.
Electroreception : The detection of electric fields by specialized sensory cells or organs. It explains how requiem sharks can locate prey hidden in sediment or darkness.
Bull shark : A stout carcharhinid shark, Carcharhinus leucas, able to enter freshwater. Its tolerance of low salinity makes it an unusual case among requiem sharks.
Shark fisheries : Commercial and subsistence fisheries that catch sharks for meat, fins, and other products. Carcharhinids are among the shark groups caught in directed and incidental fisheries.
Elasmobranchii : The cartilaginous-fish subclass containing sharks, skates, and rays. Carcharhinids belong to this larger group of cartilaginous fishes.
Osmoregulation : The regulation of water and dissolved salts within an organism. It enables carcharhinids to maintain internal balance across marine and freshwater habitats.
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