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Topic: Dusky Dolphin

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	Dolphin Encounter, Kaikoura, New Zealand
		Dusky dolphins are also found in other temperate waters of the world, namely the east and west coasts of southern South America, especially Argentina, off the west coast of South Africa (in the cool waters of the Benguela Current) and around the oceanic islands of Tristan de Cunha and Amsterdam Islands.
		Dusky dolphins are very gregarious and highly social, living together in groups called pods, which in the Kaikoura region can consist of individuals numbering anywhere from 100 to 800 in each pod.
		The dusky dolphins are reputed to be amongst the most acrobatic of the dolphin species, and their spectacular leaps, jumps, side slaps and back flips, bring shouts of joy to most that go out to witness their wild and free behaviour.
	www.dolphin.co.nz /the.htm (667 words)

	Whale and Dolphin Adoption Project -Xena
		Dusky dolphins are known to come right in close to shore in order to escape the orca and have become stranded in rock pools as a result.
		Duskies are mainly feeding on mesopelagic fishes and squid in the deep scattering layer, where large masses of organisms travel closer to the surface when the sun has gone down, in order to feed on other organisms.
		Dolphins that feed in Kaikoura at night on organisms associated with the deep scattering layer, instead feed during the day on schooling fish, revealing a behavioral plasticity that allows them to adjust their behavior with varying habitats and seasons.
	www.adopt-a-dolphin.com /Xena/index.html (4118 words)

	Dolphins in New Zealand - Swimming with Dusky Dolphins New Zealand, Dolphin Pictures
		Dusky dolphins are very gregarious and highly social, living together in groups called pods, which in the Kaikoura region, can consist of individuals numbering anywhere from 100 to 800 dolphins in each pod.
		Mating season for the dusky dolphins is usually during spring, summer and autumn, with not all mating being for reproductive purposes.
		The dusky dolphins are reputed to be amongst the most acrobatic of the dolphin species, and their spectacular leaps, jumps, side slaps and back flips, bring shouts of jot to most who go out to witness their wild and free behaviour.
	www.seriousfunnewzealand.com /aboutnz/new-zealand-dolphins.cfm (585 words)

	Dusky Dolphins - Dolphins And Whales Window
		The Dusky Dolphin is distributed in coastal waters of Chile, Argentina and the Falkland Islands, Namibia and the west coast of South Africa and the east coast of New Zealand.
		This dolphin is restricted to the southern hemisphere, in the waters of southern Africa, New Zealand and South America.
		The dusky dolphin, or Lagenorhynchus obscuratus, is small, usually measuring between 1.6 and 2m in length.
	dolphins.jump-gate.com /differnt_dolphins/dusky.shtml (1116 words)

	CMS: Lagenorhynchus obscurus, Dusky dolphin
		The distribution of dusky dolphins along the west coast of South Africa and both coasts of South America is associated with the continental shelves and cool waters of the Benguela, Humboldt and Falkland Currents.
		Dusky dolphins are one of the most acrobatic of dolphins, frequently leaping high out of the water, at times tumbling in the air (Jefferson et al.
		In Argentine dusky dolphins, large groups are more efficient at herding schools of anchovy than small ones, and it appears that methods for calling in distant groups evolved because the food benefit for each dolphin is increased when groups join forces.
	www.cms.int /reports/small_cetaceans/data/l_obscurus/l_obscurus.htm (3530 words)

	Dolphin Descriptions
		Dusky dolphins are found in the southern hemisphere.
		Dusky dolphins are not very big, which you can tell since their maximum length is only 2.1 meters while their average size is from 1.6 meters to 1.8 meters.
		Spinner dolphins are found in tropical and warm temperature oceans in the Atlantic Ocean, Pacific Ocean, and Indian Ocean.
	www.orgsites.com /ca/i-love-dolphins/_pgg3.php3 (388 words)

	SharkFriends Dusky Dolphin Page (Site not responding. Last check: 2007-11-03)
		Dusky dolphins can be found in the coastal and shelf waters of South Africa, New Zealand, southern Australia, and southern South America.
		Dusky dolphins in different areas have slightly different patterns of color on their back, but all are of the same species.
		Dusky dolphins stay in their home territory throughout the year.
	www.sharkfriends.com /dusky.html (163 words)

	African Marine Mammals
		Duskies feed on organisms associated with the Deep Scattering Layer, mainly squid and in deep waters, fishes and lanternfishes, though diet differs in different regions.
		The oldest known dusky dolphin was from New Zealand and is estimated by dentinal or tooth growth layers to be between 35-36 years old, relatively old for a moderately sized dolphin.
		Behavior and ecology of the dusky dolphin, Lagenorhynchus obscurus, in the south Atlantic.
	csiwhalesalive.org /csidusky.html (771 words)

	Dusky Dolphins of Kaikoura
		Dusky dolphins look very similar to the Pacific white-sided dolphins (Lagenorhynchus obliquidens) of the Northern Hemisphere, and are in fact of the same taxonomic genus Lagenorhynchus.
		Dolphins, however, navigate incredibly well in the dark using a technique called “echolocation.” By emitting frequent, high-pitched sounds that act as sonar, they can dive and feed on the DSL for much of the night.
		Ongoing research in the area is key to monitoring the response of dolphins to the growth and expansion of the industry.
	www.vanaqua.org /aquanews/field/duskydolphins.htm (1393 words)

	Dolphin Feature - The Dusky Dolphin
		First described in 1828 by J.E. Gray, the Dusky dolphin was given the name of "Delphinus obscurus." Latin in origin, Delphinus obscurus roughly translated to "dark or dusky." Yet another species named for its appearance, the Dusky dolphin was born.
		Often mistaken for an Hourglass dolphin, the Dusky shares common characteristics of the Hourglass in relation to body size, shape, and areas of habitat.
		Newborn Dusky dolphins are approximately 22 to 30 inches in length and weigh from 7 to 11 pounds, the same weight as some human babies, at birth.
	www.suite101.com /article.cfm/dolphins/37302 (415 words)

	Rumbos Online: Save the Dolphins
		Dolphins, porpoises and their giant cousins, whales, belong to the species scientifically known as cetaceans.
		Initial investigations revealed that as many as five dolphin species were being openly fished in Peruvian waters: the dusky dolphin (Lagenorhynchus obscurus), the Burmeister porpoise (Phocoena spinipinnis), the common dolphin (Delphinus spp.), the bottle-nosed dolphin (Tursiops truncatus) and the pilot whale (Globicephala macrorhynchus).
		Hundreds of dolphins are snared and die in the nets used for commercial fishing, though little is being done to address this problem.
	www.rumbosonline.com /articles/16-56-dolphins.htm (802 words)

	Kaikoura, New Zealand, offers you the opportunity of swimming with or watching the dusky dolphins in their natural ...
		We have been operating dolphin tours in Kaikoura since the summer of 1989-90 and have developed a wealth of experience in introducing visitors to the delights of a wonderful marine environment, close to our beautiful coastline.
		Dolphin watching does not have any restrictions, therefore is not under the same demands as dolphin swimming.
		Swimming with or watching the dusky dolphins is something very special and makes one realise that we must treasure our oceans and the inhabitants within them, because if we don’t, we risk loosing another of the world’s creations, that once gone, will never be restored.
	www.dolphin.co.nz (445 words)

	Project Jonah New Zealand
		The dusky dolphin is classified by the IUCN (The World Conservation Union) Red List as ‘Data Deficient’, meaning there is inadequate information to make a direct, or indirect, assessment of its risk of extinction based on its distribution and/or population status.
		Dusky dolphins are able to achieve speeds of up to 40 km/h.
		Dusky dolphins are highly acrobatic and are often seen leaping high into the air and performing somersaults.
	www.whalerescue.co.nz /text/resources_fact_dusky.html (400 words)

	The Speaker Series
		Würsig, Alejandro Acevedo, and Dudzinski study the dusky dolphins that come in to the local bays in the spring, summer and fall to eat anchovies.
		The dolphins drive the fish toward the ocean's surface, using it as a barrier or wall that the anchovies cannot escape.
		Dolphins are highly social animals, and in captivity, they tend to be eager to interact with humans and are more easily trained than other animals.
	www.dolphinsfilm.com /Learn/General.htm (1464 words)

	Dolphins - Dusky dolphins - Te Ara Encyclopedia of New Zealand
		Dusky dolphins (Lagenorhynchus obscurus) are slightly smaller than common dolphins at 1.6–2.1 metres long and 50–90 kilograms in weight.
		In the 1970s duskies were reported at Taranaki and Tasman Bay; by the 1990s such sightings had stopped, although the dolphins are regularly seen in and outside Wellington Harbour and in the Marlborough Sounds.
		Compared to dusky dolphins off the Argentine coast (where they are the most studied in the world), the New Zealand duskies off the Kaikōura coast are distinctive in their behaviour and feeding.
	www.teara.govt.nz /EarthSeaAndSky/SeaLife/Dolphins/2/en (611 words)

	Dusky Dolphin - Wikipedia, the free encyclopedia
		The Dusky Dolphin (Lagenorhynchus obscurus) is a highly gregarious and acrobatic dolphin found in coastal waters in the Southern Hemisphere.
		Dusky Dolphins may easily be confused with Peale's Dolphins when observed at sea.
		Outside Peruvian coastal waters, the main danger to Dusky Dolphins from humans is the accidental catching of individuals by fishing trawls.
	en.wikipedia.org /wiki/Dusky_Dolphin (600 words)

	Dusky Dolphins (Site not responding. Last check: 2007-11-03)
		Dusky Dolphins can be found in coastal temperature waters of South Africa, New Zealand, and South America.
		The Dusky Dolphin is small and compact with a short dark beak and gently sloping forehead.
		The Dusky Dolphin eats anchovies, squid, and schools of shrimp.
	facstaff.uwa.edu /jmccall/BY103/dusky_dolphins.htm (147 words)

	This will be the best Dolphin site around~Species
		Dusky dolphins are some of the most acrobatic of all dolphins.
		Dusky dolphins are often seen with seabirds and frequently associate with other cetaceans.
		The three main types of breaching performed by dusky dolphins are arc shaped leaps, lobtailing, and high somersaults and twists.
	dolphinworld.users.50megs.com /speciesbits1.html (483 words)

	Lagenorhynchus obscurus, Dusky Dolphin at MarineBio.org (Site not responding. Last check: 2007-11-03)
		The Dusky dolphin, Lagenorhynchus obscurus (Gray, 1828), is a small cetacean that reaches about 2 m in length, and weighs 100 kg or less.
		Dusky dolphins are are a curious species; therefore they favor bow riding and enjoy contact with boats and people.
		Dusky dolphins may cover greater distances during seasonal migrations, and tagged dolphins have been recorded traveling up to 20 km away from the point of origin in one day and up to 35 km over 5 days.
	marinebio.org /species.asp?id=365 (1423 words)

	Dolphins of Monkey Mia - Shark Bay (WA) Research Foundation - Questions
		Dolphins are sexually active all year round, but have a peak breeding season in the spring/summer.
		Occasionally, large numbers of dolphins are stranded on beaches where they die from over-exposure to the sun and the weight of their internal organs on land.
		The dolphins beak/rostrum is also a very powerful weapon, and some scientists have suggested that dolphins can kill a shark by ramming it in the belly.
	www.monkeymiadolphins.org /questions.htm (2439 words)

	Mundo Azul
		It is composed of the meat extracted from the dorsal part of the dolphin and served as an appetizer.
		The commercialization of small cetaceans increased in the early eighties and 5 species (dusky dolphin, burmeisters porpoise, common dolphin, the bottlenose dolphin and pilot whale) were being openly fished.
		In 1989 the Peruvian population of Dusky dolphins was declared to be a population at risk by the IUCN Cetacean Specialist Group and the Peruvian Ministry of Fisheries prohibited on 23.
	www.peru.com /mundoazul/ingles/protejamos_delfines/index.asp (547 words)

	Dusky Dolphin
		The Dusky Dolphin is one of the most acrobatic of all the dolphins.
		The Dusky Dolphin is known for its extraordinary high leaps and jumps.
		The largest gatherings of Duskies are generally found in the summer time.
	www.angelfire.com /mb/dolphins/duskydol.html (164 words)

	Dolphin Information
		Dolphins are certain aquatic mammals related to whales and porpoises.
		Dolphins are social animals, living in so called schools of up to a dozen animals.
		Dolphins are predators, chasing their prey at high speed.
	www.junglewalk.com /info/dolphin-information.htm (644 words)

	Genus Lagenorhynchus
		The white-beaked dolphin is found in the cold temperate and subarctic waters of the northern North Atlantic and the Baltic Sea, south to Cape Cod and Portugal.
		Although the white-beaked dolphin is not well-known as a bow-rider, it is sometimes attracted to boats.
		The Pacific white-sided dolphin is endemic to the northern Pacific Ocean, from the southern tip of Baja California in the west, north to the Aleutian Islands, and south to northern Taiwan in the east.
	library.advanced.org /17963/genus-Lagenorhynchus.html (794 words)

	Marine Connection - Dolphin meat
		It is composed of the meat extracted from the dorsal fin of the dolphin and served with avocado, onions and crackers.
		In 1989 the Peruvian population of Dusky dolphins were at risk and although the Peruvian Fisheries in 1990 prohibited the killing of these animals, they failed to put this into practice.
		This is the meat from the flanks of the dolphin, dark red with a strong flavour.
	www.marineconnection.org /campaigns/peru.html (467 words)

	Dusky dolphin
		Also, the Dusky Dolphin has a lighter colored face, whereas the Peale's Dolphin's face is dark, and the posterior part of its fin is light colored.
		Its habitat is limited to the the Southern Hemisphere, and the Dusky Dolphin can be observed in South America, New Zealand, the Kerguelen Islands (in the Indic Ocean) and South Africa.
		Dusky Dolphins are seen associated with other cetacean species such as the Southern Right Whale and Common Dolphin, as well as with the Southern sea Lion and various species of birds.
	www.cethus.org /camp_delfoscuroEN.htm (402 words)

	BBC - Science & Nature - Wildfacts - Dusky dolphin, Fitzroy's dolphin
		Dusky dolphins are one of the most acrobatic dolphin species.
		Dusky dolphins have a dark upper surface, light under-surface and a two-tone dorsal fin.
		Dusky dolphins are classified as Data Deficient by the IUCN Red List.
	www.bbc.co.uk /nature/wildfacts/factfiles/73.shtml (116 words)

	Dusky (Site not responding. Last check: 2007-11-03)
		Dusky Dolphins are found in coastal waters of South Africa, New Zealand and South America.
		They are normally found in small units of 6 - 15 but larger groups of 20 - 500 or massive aggregation of over 1000 are also common.
		They are highly social acrobatic, they leap, spin, somersault and bowride, and often associate with ither cetaceans, such as Common Dolphins and Southern Right Whales.
	www.geocities.com /coco193/Dusky.html (143 words)

	Dolphin Fun Facts @ RainbowDolphin.com
		Dolphins have colonized all oceans and seas of the planet, from polar to tropical regions, true mammals they must get oxygen from air and not from water such as fish, their infants are born underwater and must be brought up to the surface immediately to survive.
		In the Pacific Tunas and Dolphins follow the same routes, for years they were both captured in the nets aimed at the Tunas, the Dolphins were either drowned or slaughtered.
		Dolphin respiration is not a reflex such as with human being, it is a voluntary act.
	www.rainbowdolphin.com /dolphins/facts.shtml (2763 words)

	Dusky dolphin foraging
		Like spinner dolphins, dusky dolphins have a unique set of echo characteristics on sonar, making it possible to distinguish them from their prey and other animals in the environment.
		Dusky dolphins in Kaikoura Canyon exhibit very different behaviors while foraging than Hawaiian spinner dolphins, even though they are both feeding on micronekton sound-scattering layers.
		During this time, dusky dolphins were not actively foraging and no coordination was observed between individual dolphins.
	www2.hawaii.edu /~benoit/duskies.html (298 words)

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