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*  Fin
Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins. Fins can also generate thrust if they ... Engineering fins are also used as heat transfer fins to regulate temperature in heat sinks or fin radiators. Fins can regulate ... Surfboard fin Aquatic locomotion Fin and flipper locomotion Fin (submarine) Fish locomotion Robot locomotion RoboTuna Fin ... Foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite ...
*  Aquatic locomotion
Some paired fins, such as pectoral fins on leopard sharks, can be angled at varying degrees to allow the animal to rise, fall, ... The reduction of fin surface area helps to minimize drag, and therefore increase efficiency. Regardless of size of the animal, ... rapidly fluttering a dorsal fin and using pectoral fins (located behind their eyes) to steer. Seahorses have no caudal fin. ... Oscillating fins create thrust when a starting vortex is shed from the trailing edge of the fin. As the foil departs from the ...
*  Amphiprion latifasciatus
A. omanensis has a forked caudal fin however its pelvic and anal fins are black and the mid bar is much narrower. The forked ... Animals. National Geographic Society. Retrieved 2011-12-19. Froese, Rainer and Pauly, Daniel, eds. (2011). "Amphiprion ... although the presence of a white caudal fin or white bar at the base of the caudal fin indicates the fish is not A. ... The caudal fin is slightly forked. They have 10-11 dorsal spines, 2 anal spines, 15-16 dorsal soft rays and 12-14 anal soft ...
*  Orange-fin anemonefish
"Clown Anemonefish". Nat Geo Wild : Animals. National Geographic Society. Retrieved 2011-12-19. Breder, C.M. and D.E. Rosen 1966 ... The fins are yellow to orange. Juveniles are a dull orange. The tail fins are generally white or yellow and vary depending on ... The orange-fin anemonefish (Amphiprion chrysopterus ) is a marine fish belonging to the family Pomacentridae, the clownfishes ... A. chrysopterus tends to be darker than A. akindynos and the presence of black pelvic and anal fins eliminates A. akindynos. A ...
*  Mackerel
In turn they are hunted by larger pelagic animals such as tuna, billfish, sea lions, sharks and pelicans. Off Madagascar, ... their bodies are cylindrical with numerous finlets on the dorsal and ventral sides behind the dorsal and anal fins, but unlike ... Shaw, E; Tucker, A (1965). "The optomotor reaction of schooling carangid fishes". Animal Behaviour. 13 (2-3): 330-336. doi: ... and medieval ideas on animal procreation were creative. About 21 species in the family Scombridae are commonly called mackerel ...
*  Laem Son National Park
Angell, James Burrill (December 2000). Water is the Animal: Fin de Millenaire Reflections of Planet Earth from a Diplomatic ...
*  Polydactyly in early tetrapods
Tetrapods evolved from animals with fins such as found in lobe-finned fishes. From this condition a new pattern of limb ... The polydactyly in these largely aquatic animals is not to be confused with polydactyly in the medical sense, i.e. it was not ... The condition is thought to have arisen from the loss of the fin ray-forming proteins actinodin 1 and actinodin 2 or ... Rather, it appears to be a result of the early evolution from a limb with a fin rather than digits. ...
*  Astyanax pelecus
The animal possesses 9 dorsal fin rays. Its first unbranched ray is half of the length of its second ray. The distal margin of ... The adipose fin is located at the insertion of the last anal fin ray. Anal-fin rays range in number between 16-18. The distal ... Its pectoral fin rays range between 11-13, while its pelvic fin rays equals 7. The tip of the pelvic fin reaches a posterior ... Over the middle of its caudal fin rays there is a slight dark pigmentation. The animal counts with a single small humeral spot ...
*  Astyanax microschemos
The animal possesses 9 dorsal fin rays. Its first unbranched ray is half of the length of its second ray. The distal margin of ... The adipose fin is located at the insertion of the base of the last anal fin ray. Anal-fin rays range in number between 15-17. ... Its pectoral fin rays range between 11-13, while its pelvic fin rays equals 7. The tip of the pelvic fin reaches a posterior ... The caudal fin finds itself forked, with lobes of equal size and possessing 19 principal rays. A. microschemos has 9 to 11 ...
*  Megalocranchia fisheri
As the animal matures, its fins become spear-like in appearance. It is possible that this taxon is conspecific with ...
*  Basking shark
The basking shark has long been a commercially important fish, as a source of food, shark fin, animal feed, and shark liver oil ... The whole shark was donated to the Victoria Museum for research, instead of the fins being sold for use in shark fin soup. ... It is currently fished mainly for its fins (for shark fin soup). Parts (such as cartilage) are also used in traditional Chinese ... a pointed snout-distinctly hooked in younger specimens-and a lunate caudal fin. In large individuals, the dorsal fin may flop ...
*  Thomas Brown (philosopher)
Some animals obtained wings, others fins, and others swiftness of foot; while the vegetables exerted themselves, in inventing ... not by the animal, to which they accresce, but by the great fource of animal existence. The immense beds of limestone, chalk, ... It is contrary, however, to all the observations, which prove the processes of animal, and vegetable growth, to be the result ... The parts accreted, existing before their junction with the animal, must have formed a portion of the original matter of the ...
*  Cephalopod
The animals spread their fins and tentacles to form wings and actively control lift force with body posture. One species, ... The jet is supplemented with fin motion; in the squid, the fins flap each time that a jet is released, amplifying the thrust; ... These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles ... Instead of vision, the animal is thought to use olfaction as the primary sense for foraging, as well as locating or identifying ...
*  Octopus
Displays are often reinforced by stretching out the animal's arms, fins or web to make it look as big and threatening as ... Laboratory Animals. 14 (2): 137-142. doi:10.1258/002367780780942737. "Octopus Fact Sheet" (PDF). World Animal Foundation. ... Captive animals have been found to be more susceptible to pathogens than wild ones. A gram-negative bacterium, Vibrio lentus, ... Animal welfare groups have objected to this practice on the basis that octopuses can experience pain. Octopuses have a food ...
*  Comparison of Islamic and Jewish dietary laws
Many animals permitted in kashrut are also halal, such as bovines. To be kosher, aquatic animals must have scales and fins. ... This is similar to the Jewish law with the exception of fins. Gelatin is only permissible if it comes from a permissible animal ... Dhabihah is the method used to slaughter an animal in Islamic tradition. Shechita requires that an animal be conscious and this ... Thus some animals such as the camel are halal, but not kosher. Kashrut requires strict separation of dairy and meat products, ...
*  Conservation and restoration of totem poles
Epoxy is a method for adhering smaller fragments of wood or larger wood fragments such as wings, beaks or fins of animals. " ...
*  Dorsal fin
Some animals have developed dorsal fins with protective functions, such as spines or venom. For example, both the spiny dogfish ... Large retractable dorsal fin of the Indo-Pacific sailfish A dorsal fin is classified as a medial, unpaired fin that is located ... Some species have further adapted their dorsal fins to other uses. The sunfish uses the dorsal fin (and the anal fin) for ... Sharks typically have two dorsal fins The yellowfin tuna also has two dorsal fins Haddocks have three dorsal fins Billfish have ...
*  Carinaria galea
On the opposite side of the animal to the shell is a large rounded swimming fin with a sucker. The animal swims by undulating ... the fin from side to side. It is found in the warm waters of the Indo-Pacific Ocean and is a holoplanktonic species that spends ...
*  Vertebrate land invasion
Essentially, it is a fin that can support the animal. Similarly, it also has a neck that allows independent head movement from ... It has a fin, but interestingly the fin has bones within it that are similar to mammalian tetrapods. It has an upper arm bone, ... In contrast, land animals use necks to move their heads so they can look down to see the food on the ground. The greater the ... Their tail fins became smaller. They lost the lateral line system, a network of canals along the skull and jaw that are ...
*  Pikaia
When alive, Pikaia was a compressed, leaf-shaped animal with an expanded tail fin; the flattened body is divided into pairs of ... The notochord, a flexible rod-like structure that runs along the back of the animal, lengthens and stiffens the body so that it ... With a notochord and paired muscle blocks, the lancelet and Pikaia belong to the chordate group of animals from which the ... The Crucible of Creation: The Burgess Shale and the Rise of Animals. Oxford University Press, New York, New York. Gould, ...
*  Zoomorphic palette
Other details of an animal, such as the fins on a fish, were also commonly depicted with incisions. Some palettes contain ... Animal shapes were common in the prehistory of the Iranian regions. Examples of the animal types represented are turtles, fish ... The term zoomorphic, or animal style, refers to the palette being made in the shape of the animal portrayed. Some examples of ... This palette has other small-scale animals, a preview of some of the other major palettes-(Hunters Palette, for example}. Click ...
*  Michael Bigg
... and his colleagues discovered that individual killer whales can be identified from a good photograph of the animal's dorsal fin ... No other animal census of this kind had been performed anywhere in the world. The results of the survey taken on Tuesday July ... Variations such as nicks, scratches, and tears on the dorsal fin, and the pattern of white or grey in the saddle patch, are ... Just a few years previously, whale research had meant studying captive or dead animals, and the study of living wild whales had ...
*  Fish fin
Often the tail fin is used, but some aquatic animals generate thrust from pectoral fins. Moving fins can provide thrust ... which is certainly difficult to achieve when working with a live animal." Fin Cephalopod fin Fin and flipper locomotion Fish ... Foil shaped fins generate thrust when moved, the lift of the fin sets water or air in motion and pushes the fin in the opposite ... Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also ...
*  Deimatic behaviour
... often reinforced by stretching out the animal's arms, fins or web to make it look as big and threatening as possible. For ... Animal coloration Cheating (biology) Deception in animals Signalling theory Startle Display. Elsevier. Retrieved 17 December ... Cott, Hugh B. (1940). Adaptive Coloration in Animals. London: Methuen. Edmunds, Malcolm (1974). Defence in Animals. Longman. ... whether predators or large animals that might injure the snake by stepping on it, but aposematic (a warning signal) in animals ...
*  Evolution of fish
The first animals to venture onto dry land were arthropods. Some fish had lungs and strong, bony fins and could crawl onto the ... Their fins are fleshy, lobed, paired fins, joined to the body by a single bone. The fins of lobe-finned fish differ from those ... Two types of Early Cambrian animal apparently having fins, vertebrate musculature, and gills are known from the early Cambrian ... The fins evolved into the legs of the first tetrapod land vertebrates, amphibians. They also possess two dorsal fins with ...
*  List of mammals of Poland
"Animal Diversity Web". University of Michigan Museum of Zoology. 1995-2006. Retrieved 22 May 2007. Baraniak E., Kubasik W., ... EN Fin whale Balaenoptera physalusâ™  EN Subfamily: Megapterinae Genus: Megaptera Humpback whale Megaptera novaeangliaeâ™  LC ...
*  Agnatha
Two types of Early Cambrian animal apparently having fins, vertebrate musculature, and gills are known from the early Cambrian ... Hagfish are scavengers, eating mostly dead animals. They also use a sharp set of teeth to break down the animal. The fact that ... In addition to the absence of jaws, modern agnathans are characterised by absence of paired fins; the presence of a notochord ... Colbert, E.H. & Morales, M. (2001): Colbert's Evolution of the Vertebrates: A History of the Backboned Animals Through Time. ...