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Topic: Porpoise

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	Porpoise: Just the facts... (Site not responding. Last check: 2007-11-07)
		Porpoises are fast swimmers—Dall's porpoise (additional info and facts about Dall's porpoise) is said to be one of the fastest cetaceans with a speed of 55 km/h (34 m/h).
		Porpoises, along with whales and dolphins, are descendants of land-living mammals, most likely of the Artiodactyl (Placental mammal having hooves with an even number of functional toes on each foot) order ((biology) taxonomic group containing one or more families).
		Porpoises are rarely held in captivity in zoo (The facility where wild animals are housed for exhibition) s or oceanaria, in contrast to dolphins, which are far more popular.
	www.absoluteastronomy.com /encyclopedia/p/po/porpoise.htm (594 words)

	AllRefer.com - porpoise (Vertebrate Zoology) - Encyclopedia
		Porpoises, like other whales, are mammals; they are warm-blooded, breathe air, and give birth to live young, which they suckle with milk.
		The finless porpoise, Neomeris phocaenoides, is found in the Indian and W Pacific oceans.
		The fat of the porpoise yields a lubricating oil, and the flesh is sometimes eaten.
	reference.allrefer.com /encyclopedia/P/porpoise.html (266 words)

	Discovering Whales - The Porpoise
		Porpoise is the general term used for the 6 species in this family.
		Porpoises are small odontocetes (toothed whales) that have been distinct from their dolphin relatives since about 10-11 million years ago.
		The geographic distribution of fossils suggests that porpoises originated in the North Pacific and spread later to the Atlantic and southern oceans.
	www.omplace.com /omsites/discover/PORPOISES (169 words)

	Harbour Porpoise Factsheet (Site not responding. Last check: 2007-11-07)
		Harbour porpoises are one of the world's smallest cetaceans, growing to an average length of 1.55 meters and a mass of 55 kilograms.
		Porpoise populations throughout their ranges continue to be threatened by incidental mortality in many fisheries.
		Incidental mortality of harbour porpoise (Phocoena phocoena) by the gill-net fishery in the lower Bay of Fundy.
	www.imma.org /porpoise.html (302 words)

	MSN Encarta - Multimedia - Dall’s Porpoise
		The porpoise is a small whale closely related to the dolphin.
		There are several types of porpoise, including the Dall’s porpoise with its distinctive white markings.
		The Dall’s porpoise lives in the cold waters of the North Pacific and is found as far south as Japan.
	encarta.msn.com /media_461532386_761565254_-1_1/Dall_Porpoise.html (70 words)

	Spectacled Porpoise - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-07)
		The Spectacled Porpoise (Phocoena dioptrica) is a rarely seen member of the porpoise family.
		The species is readily distinguished from other porpoises by a characteristic dark ring around the eyes, which gives the animals their name.
		The Spectacled Porpoise was first described by Lahille in 1912 from a specimen found on a beach near Buenos Aires.
	en.wikipedia.org /wiki/Spectacled_Porpoise (340 words)

	PORPOISE - LoveToKnow Article on PORPOISE (Site not responding. Last check: 2007-11-07)
		lie porpoise, when full grown, attains a length of 5 ft. or re; the dimensions of an adult female specimen from the FIG.
		The head is rounded in front,, and differs from that dolphins in not having the snout produced into,a ~distinct)eak separated from the forehead by a groove.
		The an~ior edge of the dorsal fin is furnished with a row of small rounded my spines or, rather, tubeides, of variable number.
	www.1911encyclopedia.org /P/PO/PORPOISE.htm (314 words)

	Lady WildLifes Porpoise
		The porpoises are among the smallest of the aquatic mammals.
		Burmeister';s porpoise is found in the Southern Hemisphere, living in the cool, shallow inshore waters off South America and around the Falkland and South Georgia islands.
		Porpoises have 60 to 120 teeth, which are flattened into a spade shaped at the tip.
	ladywildlife.com /animal/porpoise.html (795 words)

	The Porpoise Page
		The primary distinguishing characteristic between Dall's Porpoise and Truei's Porpoise is the distribution of the white ventral patch.
		The personality of Dall's Porpoise seems to be unique from other members of this family, as this porpoise does not exhibit the typical shy and secretive behavior.
		Dall's Porpoises are found in coastal to deep waters of the northern North Pacific and Bering Sea.
	www.theporpoisepage.com /dalls.php (752 words)

	Harbor porpoise
		The harbor porpoise is a small, stocky animal.The dorsal side is brown or dark grey, converging to a lighter grey on the flanks.
		The harbor porpoise is a coastal species, limited to the cold temperate and subarctic waters of the Northern Hemisphere.
		The rehabilitation and release of stranded harbour porpoises (Phocoena phocoena).
	ourworld.compuserve.com /homepages/jaap/phocoena.htm (1000 words)

	Fishery Bulletin: Abundance and depth distribution of harbor porpoise in northern California determined from a 1995 ... (Site not responding. Last check: 2007-11-07)
		Porpoise distribution in northern California was not random with respect to water depth; significantly more porpoise than expected occurred at depths of 20 to 60 m and fewer porpoise than expected occurred at depths [is greater than] 60 m.
		Forney (1999) noted that harbor porpoise abundance was negatively correlated with positive sea surface temperature anomalies off central California and suggested that perceived declines in porpoise abundance may be due to interannual movement of animals in and out of the study area in response to changing oceanographic conditions, rather than an actual population decline.
		Current knowledge of harbor porpoise stock structure off California suggests that porpoise do not make long-distance movements; thus it is possible that a perceived population decline in central California is the result of small-scale changes in porpoise distribution, given that aerial survey transects have remained unchanged since 1986 (Forney 1995, 1999).
	www.findarticles.com /p/articles/mi_m0FDG/is_1_99/ai_73023316 (1337 words)

	Porpoises (Site not responding. Last check: 2007-11-07)
		In many places, porpoises can be distinguished from one another by geography: as a family they are widely distributed but as there is little overlap in range, the species can often be identified by a process of elimination.
		Porpoises' teeth are spade shaped, whereas dolphins' are conical.
		The Finless Porpoise has tubercles on its back, in place of a dorsal fin; these vary from a narrow row to a band 7-10cm (3-4in) wide at the front and tapering towards the tail.
	www.amploc.freeserve.co.uk /html/encyclop/porpoise/porpoise.htm (416 words)

	Harbour Porpoise
		The harbour porpoise is a short, stocky toothed cetacean that inhabits cool coastal waters of the northern hemisphere.
		Sides of the harbour porpoise are mottled gray, the dorsal side is dark grey and the underbelly is white.
		Although harbour porpoise have been spotted in deep water, they tend to remain in shallower inshore waters where they are most often observed in small groups of one to three animals.
	www.wildwhales.org /cetaceans/harbourporp/history.html (201 words)

	ACS Dall's porpoise Cetacean Fact Sheet - American Cetacean Society
		This uniquely marked, fl and white porpoise was named after the American naturalist W. Dall, who collected the first specimen of the type, which is now on display in the U. National Museum.
		As the porpoise dashes in at high speed, its head and back produce a bow wave called a "rooster tail", which creates a hollow cone allowing the animal to breathe while still under the surface of the water.
		Efforts are now being made to regulate the annual losses of Dall's porpoise, but it is a very difficult task to assess population size, movements, numbers lost in nets, and the impact that these losses have on the total population in a wide expanse of ocean.
	www.acsonline.org /factpack/DallsPorpoise.htm (1142 words)

	CMS: Neophocaena phocaenoides, Finless porpoise
		From observations in the fluctuation of the proportion of mother-calf pairs, it is suggested that porpoises use the Inland Sea of Japan as a breeding ground.
		Finless porpoises are known to occur year-round in Ise and Mikawa Bays with a peak abundance in April-June.
		Habitat degradation: Finless porpoises are vulnerable to habitat encroachment, which is particularly true for the population in the Yangtze River, that may face the same threats as the baiji.
	www.cms.int /reports/small_cetaceans/data/N_phocaenoides/n_phocaenoides.htm (3040 words)

	porpoise -- Encyclopædia Britannica
		Small cetaceans “porpoise” when they are swimming rapidly; that is, they rise out of the water in a low leap that keeps the head clear of the water for breathing.
		Although the terms dolphin and porpoise are sometimes used interchangeably to refer to any member of the group, biologists recognize three distinct families: the true porpoises, with six marine species; the river dolphins, with five freshwater species; and the true dolphins, with more than 30 marine species.
		Because porpoises do not survive as well in captivity, less is known about their biology and social behavior than that of some dolphins.
	www.britannica.com /eb/article-9060891?tocId=9060891 (811 words)

	Porpoise,Mammals,Porpoise Picture,Mammal Pictures,Catalog,Encyclopedia (Site not responding. Last check: 2007-11-07)
		Porpoises, small- to medium-sized whales, have a rounded rather than a beaked snout but are often mistaken for the Atlantic bottle-nosed DOLPHINs, the beaked, small whales that perform in oceanariums.
		The common, or harbor, porpoise, genus Phocaena, is 1.2 to 1.8 m (4 to 6 ft) long and weighs 49 to 74 kg (110 to 165 lb).
		The dall and true porpoises, genus Phocoenoides, are 1.2 to 1.65 m (4 to 5.5 ft) long and weigh up to 124 kg (275 lb).
	www.4to40.com /earth/geography/htm/mammalsindex.asp?counter=125 (228 words)

	Spectacled porpoise (Australophocaena diotropica) (Site not responding. Last check: 2007-11-07)
		Although the distribution of spectacled porpoise in these waters is beleived to be circumpolar in nature (see map), reliable sightings have only been made at these locations: Heard Island, Kerguelan Island, Macquarie Island, South Georgia, the Falkland Islands and Tierra del Fuego.
		Spectacled porpoises are uniform fl on their dorsal and dorso-lateral surfaces which are separated from the lighter ventral and ventro-lateral surfaces by a distinct line.
		The dorsal fins of spectacled porpoises are triangular in shape and are greatly enlarged in males.
	phocoena.org /factsheets/spectacled.html (312 words)

	Harbour porpoise (Phocoena phocoena) (Site not responding. Last check: 2007-11-07)
		Harbour porpoises are found in the temperate waters of the northern hemisphere in a nearly circumpolar distribution (see map).
		Harbour porpoises are one of the world's smallest cetaceans, growing to an average length of 1.55 m and a mass of 55 kilograms.
		Northwest Atlantic harbour porpoises are currently designated as a strategic stock under the U.S. Marine Mammal Protection Act (MMPA) because current levels of killing exceed the estimated Potential Biological Removal (PBR) level for the population.
	phocoena.org /factsheets/harbourporp.html (340 words)

	Harbor Porpoise
		At the time of stranding, the young male porpoise was 46 inches (117 cm) long and weighed less than 30 pounds (13 kg).
		The porpoise was then transferred to the Marine Animal Rehabilitation Center (MARC) at the University of New England in Biddeford, Maine, where it spent three months in a cold, natural seawater facility.
		Porpoises are cold water animals, common to the Gulf of Maine and other cold-water regions where water temperature can be as low as 30 degrees fahrenheit.
	www.aqua.org /oceanhealth_harborporpoise.html (375 words)

	Dall's porpoise
		The Dall's porpoise is found in the Northern Pacific, from north of Honshu, Japan in the west and from 28°N in the east up to the Sea of Okhotsk and the Bering Sea, in summer as far north as the Pribilof islands.
		Donovan, G.P. and Bjørge, A. Dall's porpoise, Phocoenoides dalli - Introductory remarks in: A. Bjørge and G.P. Donovan (eds.): Biology of the Phocoenids, pp.
		Turnock, B.J. and Buckland, S.T. Trends in abundance of Dall's porpoise in the Western North Pacific, 1979-1989 in: A. Bjørge and G.P. Donovan (eds.): Biology of the Phocoenids, pp.
	ourworld.compuserve.com /homepages/jaap/dalls.htm (871 words)

	Phocoenoides (Site not responding. Last check: 2007-11-07)
		Cheetah of the North Pacific, Dall's porpoise is among the fastest of marine mammals.
		Dall's porpoises are the largest cetaceans in the porpoise family, growing to 2.2 meters long and 220 kilograms.
		The range of the porpoises includes the temperate regions of the North Pacific, north of 28° N. latitude in the eastern Pacific and 36° N. latitude in the western pacific.
	www.tmmsn.org /mmgulf/phocoenoides.html (410 words)

	Detailed information about Dall's Porpoises (Site not responding. Last check: 2007-11-07)
		Though individual animal coloring varies slightly, Dall's porpoises are easy to identify as they are mostly fl with white along their sides, on the top half of their dorsal fins and on the trailing edge of their flukes.
		Dall's porpoises are thought to have a rather varied diet consisting of hake, squid, lanternfish, anchovy, sardines and small schooling fish.
		These porpoises become so intense upon the pursuit of their food that they fail to anticipate or see gill nets set for fish.
	nmml.afsc.noaa.gov /education/cetaceans/dalls2.htm (406 words)

	Grand Manan Whale & Seabird - harbour porpoise release news 1998
		We successfully released (or the porpoises swam out on their own) 31 of 34 porpoises, two died during seining process, and the fate of one was unknown (see Table 2).
		There is a great degree of variability in the ways porpoises react to the seining and handling process; some individuals appear to become more stressed than others and this may affect their chance of survival during the seining process.
		From a clifftop, Tara Cox and her assistant tracked porpoises using a theodolite (a surveying instrument) whenever the porpoises approach a mooring she had equipped with a pinger.
	www.gmwsrs.org /weir98.htm (1891 words)

	WhaleTimes Fishin' for Facts - Harbor Porpoise
		The harbor porpoise is one of the smallest kinds of whales, only reaching sizes up to 2 meters (6.5 feet) and can weight up to 90 kg (199 lb).
		Like other porpoises, their teeth are "spade-shaped." The use their teeth to grasp and tear their food.
		Harbor porpoises are usually seen in small groups of 2 to 10 animals, however, once in a while larger herds of 50 or so animals are seen together.
	www.whaletimes.org /harborporp.htm (212 words)

	USN Ships--USS Porpoise (SS-172)
		Porpoise's second patrol, in February and March, was conducted in the Netherlands East Indies as the Japanese moved in and conquered that vital source of strategic resources.
		Temporarily operating from Fremantle, Australia, Porpoise made her third wartime cruise in April-June 1942, passing through the East Indies and then crossing the Pacific to California, where she was overhauled during the summer and early fall.
		Porpoise decommissioned in November 1945 but in May 1947 was brought back to noncommissioned service as a stationary training submarine for Naval Reservists in the vicinity of Houston, Texas.
	www.history.navy.mil /photos/sh-usn/usnsh-p/ss172.htm (743 words)

	CMS: Phocoena dioptrica, Spectacled porpoise
		The spectacled porpoise is highly distinctive with its unusual pigmentation, small head and facial features and the large male dorsal fin.
		In Argentina and Chile, spectacled porpoises are taken in gillnets, and they may be taken deliberately for crab bait off southern Chile.
		According to Jefferson and Curry (1994), gillnets represent the single most important threat to porpoises as a group, and this may be an example of a 'no technical solution problem'.
	www.cms.int /reports/small_cetaceans/data/P_dioptrica/p_dioptrica.htm (964 words)

	Finless Porpoise
		he finless porpoise is different from other porpoises in that it has a prominent, rounded forehead, which gives the appearance of a slight beak, and a ridge of small rounded projections just behind where the dorsal fin should be.
		Finless porpoises dive for less than a minute in search of prey and are quick and agile in the water.
		Although finless porpoises generally move in pairs, groups of up to 10 are sometimes seen.
	mbgnet.mobot.org /salt/coral/animals/porpoise.html (128 words)

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