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The Cookiecutter shark, Isistius brasiliensis (also known as the Cigar shark or Luminous shark) is a small rarely-seen dogfish shark. It gets its name from its feeding style which often creates perfect "cookie-cutter" shaped plugs in the skin of large marine mammals and other large sharks. Image File history File links Cookiecuttershark. ...
Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ...
Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ...
Phyla Chaetognatha Echinodermata Hemichordata Chordata Deuterostomes (from the Greek: second the mouth) are one of the two superphyla of animals in the taxonomic branch bilateria, the other being the protostomes. ...
Typical Classes Subphylum Urochordata - Tunicates Ascidiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with...
Orders See text. ...
Families Squalidae (dogfish sharks) Centrophoridae (gulper sharks) Dalatiidae (sleeper sharks) Echinorhinidae (bramble sharks) Squaliformes is an order of sharks that includes the smooth dogfish and spiny dogfish and others, about 80 species in four families. ...
The sleeper sharks are a family (Dalatiidae) of sharks. ...
In biology, binomial nomenclature is the formal method of naming species. ...
Jean René Constant Quoy (November 10, 1790 - July 4, 1869) was a French zoologist. ...
Joseph Paul Gaimard (lithograph by Emile Lassalle) Joseph Paul Gaimard (1796 - 1858) was a French naturalist. ...
1824 was a leap year starting on Thursday (see link for calendar). ...
Orders Hexanchiformes Squaliformes Pristiophoriformes Squatiniformes Heterodontiformes Orectolobiformes Carcharhiniformes Lamniformes Sharks are a group (superorder Selachimorpha) of fish, with a full cartilaginous skeleton, a streamlined body plan, with normally 5, but up to 7 (depending on species) gill slits along the side of, or beginning slightly behind, the head (in some...
Physical Characteristics
The cookiecutter sharks often glow green and grow up to 50 cm (20 in) long. The underside of the shark is bioluminescent, glowing a pale blue-green that matches the background light from the ocean's surface that serves as camouflage to creatures beneath it. However, a small non-luminescent patch appears black, deceiving the shark's prey, smaller predatory fish (like tuna), into thinking the shark is an even smaller fish. When the predatory fish tries to strike at the shark, the shark strikes back, scoring itself another meal [1]. This is the only known instance whereby a bioluminescent lure is created by the absence of luminescence (contrast with anglerfish). Bioluminescence is the production and emission of light by a living organism as the result of a chemical reaction during which chemical energy is converted to light energy. ...
Anolis caroliensis showing blending camouflage and counter-shading. ...
ŒœáħÅųÅġĖĞɮʙ[[]] It has been suggested that this article or section be merged with predation. ...
Species Thunnus alalunga Thunnus albacares Thunnus atlanticus Thunnus maccoyii Thunnus obesus Thunnus orientalis Thunnus thynnus Thunnus tonggol Tuna are several species of ocean-dwelling fish in the family Scombridae, mostly in the genus Thunnus. ...
Anglerfish is the common name for the 200+ species that comprise the bony fish order Lophiiformes. ...
Distribution Worldwide in deep water.
Habits and Habitat The cookiecutter shark has been found at depths of about 1,000 m (3,300 ft) below the surface of the ocean. It derived its name from its habit of removing small circular chunks of flesh from whales and large fish. It is hypothesized that the shark seizes its much larger prey with its jaws, then rotates its body to achieve a highly symmetrical cut. They are considered a parasite. Cookiecutter sharks reproduce through aplacental viviparity in the same way as great white sharks. Little else is known about their reproduction. Whales are the largest species of exclusively aquatic mammals, members of the order Cetacea, which also includes dolphins and porpoises. ...
Atlantic herring, Clupea harengus: the most abundant species of fish in the world. ...
A hypothesis (from ancient Greek hypotithenai meaning to put under or to suppose) offers a proposed explanation for a phenomenon. ...
The jaw is either of the two opposable structures forming, or near the entrance to, the mouth. ...
Square with symmetry group D4 Symmetry is a characteristic of geometrical shapes, equations, and other objects; we say that such an object is symmetric with respect to a given operation if this operation, when applied to the object, does not appear to change it. ...
Ovoviviparous animals develop within eggs that remain within the mother up until they hatch or are about to. ...
Binomial name Carcharodon carcharias (Linnaeus, 1758) For information about the band, see Great White (band). ...
References The Integrated Taxonomic Information System (ITIS) is a partnership designed to provide consistent and reliable information on the taxonomy of biological species. ...
January 23 is the 23rd day of the year in the Gregorian calendar. ...
2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
FishBase is a comprehensive database of information about fish. ...
See also This is a list of shark species. ...
Humpback anglerfish Deep sea fish is a term for fish that live below the photic zone of the ocean. ...
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