
	Where results make sense

Topic: Animal echolocation

Related Topics

Echolocation

Human echolocation

Sonar

Bioacoustics

Bat

Dolphin intelligence

Greater Bulldog Bat

Hearing (sense)

Indian Ocean Bottlenose Dolphin

Infrasound

Bottlenose Dolphin

Bulldog bat

Donald Griffin

Dolphin

Lesser Bulldog Bat

In the News (Fri 27 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Animal echolocation - Wikipedia, the free encyclopedia
		Echolocation, also called Biosonar, is the biological sonar used by several mammals such as bats, dolphins and whales.
		Echolocation is used for navigation and for foraging (or hunting) in various environments.
		Their use of echolocation allows them to occupy a niche where there are often many insects (that come out at night since there are less predators then) and where there is less competition for food, and where there are fewer other species that may prey on the bats themselves.
	en.wikipedia.org /wiki/Animal_echolocation (1192 words)

	SSC San Diego TD 627 Revision D - Chapter 1 (Site not responding. Last check: 2007-10-12)
		Echolocation signals of two bottlenosed dolphins echolocating on targets at distances of 60 to 80 yards were measured.
		The echolocation transmission beam pattern of a false killer whale was measured in the vertical and horizontal planes in the open waters of Kaneohe Bay, Oahu, Hawaii, while the whale performed a target discrimination task.
		Adaptiveness and Ecology of Echolocation in Toothed Whales.
	www.spawar.navy.mil /sti/publications/pubs/td/627/revd/ch1sound.html (13687 words)

	Gander Academy's Echolocation in Bats
		Echolocation is a method of sensory perception by which certain animals orient themselves to their surroundings, detect obstacles, communicate with others, and find food.
		Echolocation is the use of ultra-high frequency sounds for navigation.
		Echolocation is the use of the echoes of sounds produced by certain animals to detect obstacles in their paths and perhaps to locate food.
	www.cdli.ca /CITE/batsecho.htm (367 words)

	BOTTLENOSE DOLPHINS - Communication & Echolocation
		The term echolocation refers to an ability that odontocetes (and some other marine mammals and most bats) possess that enables them essentially to "see" with their ears by listening for echoes.
		Echolocation is most effective at close to intermediate range, about 5 to 200 m (16-656 ft.) for targets 5 to 15 cm (2-6 in.) in length (Au, 1993).
		Despite the effectiveness of echolocation, studies show that a visually-deprived dolphin takes more time to echolocate on an object than a dolphin using vision in tandem with echolocation (Akamatsu, et al., 1995).
	www.seaworld.org /animal-info/info-books/bottlenose/communication.htm (720 words)

	Learning to Listen: Science News Online, May 14, 2005 (Site not responding. Last check: 2007-10-12)
		Bats are members of one of the most diverse groups of mammals, and the echolocation capability that enables some bat species to detect, track, and catch insects on the wing—even ones as small as mosquitoes—is a crucial part of bats' success.
		Some echolocating species have close relatives that apparently possess the anatomical means to echolocate but don't use it, implying that avian echolocation is a behavior that some species simply haven't learned.
		Echolocation's evolution several times in groups of vertebrates as disparate as birds, bats, and whales is a testament to its biological usefulness.
	www.sciencenews.org /articles/20050514/bob9.asp (2637 words)

	AHT Lecture
		Animal Model - Natural or induced disease or condition occurring in animals that is similar to a human disease or condition.
		Echolocation is used by bats to locate food and to navigate (sonar).
		Nude mouse - A mouse mutation in which the animal is both hairless and lacks a thymus, which deprives the mouse of T-cell lymphocytes of their immune systems.
	campus.murraystate.edu /academic/faculty/doug.erbeck/Aug.30.1.htm (2247 words)

	Dolphins Anatomy Page 1 - Dolphins and Whales Window
		Animal echolocation: is the ability of some animals to locate objects by emitting sound waves and listening for the echo.
		The ultrasound echolocation used by bats was first described by zoologist Donald Griffin in 1938 when working as an undergraduate at Harvard.
		These things combined make it possible for animals with echolocation to detect and react to conditions that human observers simply cannot detect, because the situation is out of the observers' range, can't be resolved by the human eye, or it might even be around a corner.
	dolphins.jump-gate.com /start_page/dolphin_anatomy1.shtml (1561 words)

	Annotated Bibliography of Publications from the US Navy's Marine Mammal Program (NRaD Technical Document 627 Revision ...
		In an active echolocation target detection task, the echolocation click from a bottlenosed dolphin triggered a short-sound-burst masking noise, from the target area, which could be adjusted from coincidence with the target echo to delays up to 700 microseconds.
		The porpoise was acoustically masked to prevent use of its echolocation pulses and trained to report the presence or absence of a 7.62-cm-diam.
		The echolocation capabilities of a beluga (Delphinapterus leucas) and an Atlantic bottlenosed dolphin (Tursiops truncatus) were directly compared in a target detection experiment.
	www.rtis.com /nat/user/elsberry/marspec/navybib/nb_ssc.html (10756 words)

	fUSION Anomaly. Echolocation
		A sensory system in certain animals, such as bats and dolphins, in which usually high-pitched sounds are emitted and their echoes interpreted to determine the direction and distance of objects.
		Echolocation, high-pitched sounds emitted by certain animals to locate their prey or to avoid obstacles.
		Echolocation - the location of objects by their echoes - is a highly specialized faculty that enables dolphins to explore their environment and search out their prey in a
	fusionanomaly.net /echolocation.html (1050 words)

	[No title]
		Animal Model Natural or induced disease or condition occurring in animals that is similar to a human disease or condition.
		Nude mouse A mouse mutation in which the animal is both hairless and lacks a thymus, which deprives the mouse of Tcell lymphocytes of their immune systems.
		Zoonoses Diseases that may be transmitted between animals and humans and vice versa ii 10 Sample Questions An epidemic of mouse hepatitis virus resulted in increased mortality of suckling mice, even though MHV was enzootic and endemic in the animal care facility affec ted.
	campus.murraystate.edu /academic/faculty/doug.erbeck/Aug.30.1.doc (2430 words)

	BELUGA WHALES - Communication & Echolocation
		The term echolocation refers to an ability that toothed whales (and some other marine mammals and most bats) possess that enables them to locate and discriminate objects by listening for echoes.
		In one echolocation study, a single beluga produced signals with peak frequencies of 40 to 60 kHz in San Diego Bay, California, and 100 to 120 kHz when moved to Kaneohe Bay, Hawaii.
		For belugas, echolocation is especially important for navigating under ice fields and locating breathing holes in the ice.
	www.seaworld.org /animal-info/info-books/beluga/communication.htm (567 words)

	Whale - Wikipedia Light! (Site not responding. Last check: 2007-10-12)
		The Blue Whale is the largest known animal that has ever lived, at up to 30 m (93ft) long and 180 tons.
		Given the radically different environment of whales and humans, and the size of whales compared to dolphins or chimpanzees, for instance, it is extremely difficult to test these views experimentally.
		The frequency and size of beachings around the world, recorded over the last 1,000 years in religious tracts and more recently in scientific surveys, has been used to estimate the changing population size of various whale species by assuming that the proportion of the total whale population beaching in any one year is constant.
	godseye.com /wiki/index.php?title=Whales (2464 words)

	How marine mammals use sound when feeding: Animals and Sound in the Sea (Site not responding. Last check: 2007-10-12)
		Echolocation is important to marine mammals because it allows them to navigate and feed in the dark at night and in deep or murky water where it is not easy to see.
		Echolocation is typically used by toothed whales to capture single prey items such as fishes or squid.
		Echolocation used in feeding is different from sounds used in communication.
	www.dosits.org /animals/use/2a.htm (490 words)

	lake champlain
		This inland sea was inhabited by many of the animals that inhabit the North Atlantic today, including mollusks, sea urchins, squid, herring, cod, salmon, seals, and belugas.
		Searching for an animal such as this is purported to be, using sonar, unless it is highly specialized form, would be not be valid protocol from an animal behavior standpoint.
		The echolocation signal under analysis is similar to Beluga whale and killer echolocation, yet different enough so that we can not make a positive identification.
	www.animalvoice.com /lakechamplain.htm (1838 words)

	FOREWORD
		Some of the personnel and animals at Point Mugu transferred to the Hawaii Laboratory, and later the rest of the operation moved to a new facility on Point Loma in San Diego.
		Although belugas are inshore and estuarine animals which enter rivers for calving and feeding, they were found capable of diving to at least 2,100 feet.
		Navy dolphins are trained untethered in the open ocean on an almost daily basis, and yet in the course of 30 years of such training and many thousands of these open-ocean sessions only seven of the Navy’s dolphins have failed to return to their enclosures.
	www.quasar.org /memes/structure99/marinemammalpubs.htm (9577 words)

	Bats: Echolocation
		cholocation is a method of sensory perception by which certain animals orient themselves to their surroundings, detect obstacles, communicate with others, and find food.
		During echolocation a series of short, high-pitched sounds are emitted by an animal.
		This echolocation system is so accurate that bats can detect insects the size of gnats and objects as fine as a human hair.
	www.cccoe.k12.ca.us /bats/resources/echolocation.htm (131 words)

	Animal Communication, Echolocation, Defense and Offense
		Echolocation is a particularly interesting field of bioacoustics and this paper examines the role echolocation plays for dolphins and bats.
		The term "echolocation" refers to the ability that some marine mammals and bats possess that enables them essentially to "see" with their ears by listening for echoes.
		Echolocation is one field of bioacoustics and this paper examines the role echolocation plays for dolphins and bats.
	www.unc.edu /~jdale/Comm141.htm (2817 words)

	Anemaw [Animal Electromagnetism and Waves] : Sonar, Echolocation, & Ultrasonics: Dolphin . © Elizabeth Gerrow 2002 .
		It was found in studies that if the dolphin is placed in a tank of colourless water and they are familiar with the walls and the tank size, echolocation is not used excessively.
		From the waves they direct out from their body, dolphins can derive the location, distance, speed, direction, and size of the object, which are often fish who are unaware that they are made to be a target.
		The echolocation system employed by dolphins has been of interest for many years, where there was curiosity regarding the origin of the ultrasonic "clicks" and the ability for dolphins to perceive and process the waves and their information.
	members.fortunecity.com /anemaw/dolphin.htm (1431 words)

	GK-12 Sensors!
		The purpose of this module is to acquaint students with some of the special “sensors” possessed by animals and how these help the animals to hunt, navigate, and survive in their environments.
		The module includes class discussion of animal senses and sensor technology, student exploration of websites relating to animal senses, a demonstration of the Earth’s magnetic field, and an activity demonstrating the technique of echolocation, used by animals such as bats and dolphins.
		Students of this age group are generally interested in animals, and since animals are already part of the curriculum in a life science course, this module fits well into the curriculum.
	www.eece.maine.edu /research/gk12/Animal_Senses.htm (711 words)

	HMMC publications
		L., and Moore, P. "Perception of Complex Echoes by an Echolocating Dolphin," In: Animal Sonar: Processes and Performance, edited by P. Nachtigall and P. Moore, (Plenum, New York), pp.
		E., A. Murchison, and W. Au, (1978) Discrimination of solid cylinders and cubes by a blindfolded echolocating bottlenose dolphin (Tursiops truncatus).
		E., Au, W. L., and Roitblat, H. "Animal echolocation and signal processing," Ocean 94: Proceeding of the IEEE I, 259-263.
	www.hmmc.org /HMMCpapers.html (5097 words)

	Bat Radar - Echolocation - Vision - Habitat of Bats
		This echolocation is so precise that not only can the bat navigate a Bat Cave in complete darkness, but can actually identify and locate the exact position of their insect prey in flight.
		If a bat's ears get injured or clogged they are unable to receive the reflected echoes, and thus lose their ability to echolocate.
		David and I both thank you in advance for your continued interest and support for not only the Sanctuary and its residents, but the Tigerhomes Mission as well.
	www.tigerhomes.org /animal/the-bat-radar-vision.cfm (450 words)

	williambat (Site not responding. Last check: 2007-10-12)
		It lives on the treetops of forests and can sometimes be found in small caves.
		Echolocation is when the bat sends out screaches and when the sound waves hit something it bounces back to the bat and the bat goes into the direction in which the waves come from.
		The Hawaiian Hoary Bat is is one of the three endangered mammals of Hawii.
	www.k12.hi.us /~shafter/gtanimalrep9899/williambat.html (168 words)

	Wild World Glossary (Site not responding. Last check: 2007-10-12)
		The plants and animals of the Galápagos Islands are a result of adaptive radiation, where one plant or one animal species diversified into many species that fill a variety of ecological roles.
		Using echolocation, the animal emits high-pitched sounds that reflect off of an object and return to the ears or other sensory receptors.
		a community of plants, animals, and microorganisms that are linked by energy and nutrient flows and that interact with each other and with the physical environment.
	www.nationalgeographic.com /wildworld/glossary.html (1577 words)

	LiveScience.com - What a Buzz: Whales Hunt Like Bats
		So little light makes it to the deep, dark waters where sperm whales do their hunting that the aquatic beasts are essentially blind as bats.
		The good news for these whales is that like bats, they can use echolocation to find their prey, according to new research.
		The sperm whale is the world's largest deep-diving toothed whale and feeds mainly on squid.
	www.livescience.com /animalworld/060523_whale_buzz.html (311 words)

	Animal Encyclopedia: Vampire Bat (Site not responding. Last check: 2007-10-12)
		You may follow your nose to the nearest pizza place, but vampire bats use their ears to figure out where the next meal is. Like many species of bats, these Central and South American mammals use "echolocation" to find food--and find their way--in total darkness.
		By listening to the sounds, or echoes, that bounce back, they can determine exactly where an object or prey animal is. If a vampire bat comes upon a sleeping bird or other prey mammal, he makes a small bite in the skin and laps up the blood from the wound.
		One other cool thing about vampire bats is that their knees face backwards.
	www.animaland.org /asp/encyclopedia/vampirebat.asp (156 words)

Try your search on: Qwika (all wikis)