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Topic: Megamouth Shark


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  Megamouth Shark, Megachasma pelagios
The Megamouth Shark is easily recognised by its huge, soft head and large mouth which is positioned at the anterior margin of the head.
Male sharks are known to mature by 4 m in length.
This vertical migration coincides with the vertical migration of the euphausid shrimps that are part of the Megamouth Shark's diet.
www.amonline.net.au /fishes/fishfacts/fish/megamouth.htm   (609 words)

  
  NationMaster - Encyclopedia: Megamouth Shark   (Site not responding. Last check: 2007-10-28)
The megamouth shark, Megachasma pelagios, is an extremely rare and unusual species of shark, discovered in 1976, with 37 specimens known to be caught or sighted as of 2006.
Like the basking shark and whale shark, it is a filter feeder, consuming plankton and jellyfish, and is distinctive for its large head with rubbery lips.
The first megamouth was captured on November 15, 1976 about 25 miles off the coast from Kaneohe, Hawaii when it became entangled in the sea anchor of a United States Navy ship.
www.nationmaster.com /encyclopedia/Megamouth-Shark   (2529 words)

  
 Megamouth Shark - Megachasma pelagios
Because the megamouth shark is somewhat of a mystery fish and is considered the rarest of all sharks, no enemies are known.
The shark was bewildered and evidence of the assault were clearly shown along the gills and dorsal fin.
The megamouth shark was not known to exist until 1976, when a male got caught in a US Navy trawler's parachute anchor off the coast of Hawaii.
www.angelfire.com /mo2/animals1/megamouth/megamouth.html   (433 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal   (Site not responding. Last check: 2007-10-28)
Like the basking shark and whale shark, it is a filter feeder, and swims with its enormous mouth wide open, filtering water for plankton and jellyfish.
The megamouth has a generally brownish-flish color on top and white underneath, and an asymmetrical tail with a long upper lobe, similar to the thresher shark.
Megamouth has a large mouth with small teeth, and a broad, rounded snout, causing observers to occasionally mistake megamouth for a young orca.
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Megamouth_shark   (700 words)

  
 Florida Museum of Natural History Ichthyology Department: Megamouth Shark   (Site not responding. Last check: 2007-10-28)
The 7th megamouth observed, a female with 471cm in total length was heavily studied and one of the conclusions is that this specimen is immature.
This parasitic shark is presumed to be a vertical migrator on a diel cycle, spending the daytime in deep waters and ascending to midwater depths and to the surface at night.
Megamouth had probably been encountered more times than we know, but often such large sharks are returned to the sea by their captors because of the difficulty in handling them.
www.flmnh.ufl.edu /fish/Gallery/Descript/Megamouth/megamouth.htm   (2065 words)

  
 Megamouth Shark
Megamouths are so rare that they were not known to exist until the first one was discovered off the coast of Hawaii in 1976.
This would be the sixth Megamouth seen by man. When he hauled up the net, the fisherman knew that he had something unusual and he towed it seven miles by the tail, back to Dana Point Harbor.
This Megamouth, like the previous five, was a male, which was evident by the claspers on the underside of the shark.
www.sharkmans-world.com /mega.html   (1328 words)

  
 ELASMO.COM Fossil Genera: Megachasma - Megamouth Shark
Megamouth #1 was caught (this 4.5m mature male was actually snagged by a U.S.N. research vessel) off Hawaii in 1976, and described in 1983.
In Megamouth #7, the largest lower teeth were approximately 8.5 mm in height (upper 6.5 mm) and the posteriors, 3.0 mm (upper 2.5 mm).
The megamouth tooth can be broadly described as having a high, porous, triangular root, lacking a clearly defined nutrient groove and a lingually directed cusp which is broad and deep basally and narrow apically.
www.elasmo.com /genera/cenozoic/sharks/megamouth.html   (1203 words)

  
 FI - Species fact sheets   (Site not responding. Last check: 2007-10-28)
Compagno (1990b) noted that the protrusability of the jaws in the megamouth shark may allow it to use its mouth as a bellows to suck in prey, and that open-mouthed cruising through prey concentrations was optimal for the basking shark but not the megamouth shark.
It was thought that the shark was responding to light levels in choosing its depth range, and as light increased it correspondingly sought an optimal level by diving at dawn and conversely responded to decreasing light levels by ascending to near (but not at) the surface at dusk.
The megamouth shark is the only known selachian victim of the semiparasitic cookiecutter shark, Isistius brasiliensis, and may be especially vulnerable to Isistius attacks because of its soft skin, epipelagic habitat in warm seas where Isistius is also found, sluggishness, and relatively slow swimming speed.
www.fao.org /fi/website/FIRetrieveAction.do?dom=species&fid=13392   (1960 words)

  
 Strange Looking Sharks   (Site not responding. Last check: 2007-10-28)
The megamouth shark was first seen in 1976 by accident when it became entangled with a US Navy ship's anchor.
Megamouths are named after their extremely large mouth which extends from the front of the snout to behind the eyes.
Megamouth sharks are a bit of a mystery because so few of them have been seen and fewer of them studied.
www.kidzworld.com /article/935-wild-things-strange-looking-sharks   (605 words)

  
 Sharks
The whale shark is found in all tropical and subtropical oceans, along coastal regions, and enters lagoons on tropical islands.
The megamouth shark is not likely to be seen by divers because they often live at great depths in the ocean.
The blue shark is one of the most attractive sharks because it is large and slender, with an indigo blue upper body, bright blue sides, and the a white belly.
www.geocities.com /jzbar2002/sharks.htm   (670 words)

  
 Wildlifeonline - Natural History of the Megamouth Shark
The Megamouth shark is one of the greatest fish discoveries to have emerged in the 20
The taxonomy of this shark was finally subjected to molecular phylogenetics (using DNA to infer relatedness) with the discovery of the seventh specimen, a 4.71m (15 ½ ft) female found washed ashore in Hakata Bay, Japan in November 1994.
In their paper for the Biology of the Megamouth Shark, Yoshitaka Yabumoto and his co-workers found that the female specimen they analysed had 83 rows of teeth in her upper jaw and 97 in her lower jaw, of which only three rows were functional.
www.wildlifeonline.me.uk /megamouth.html   (2955 words)

  
 NOVA Online | Island of the Sharks | Order Lamniformes
Shark bite: The sand tiger shark is denser than water but it swallows airs at the surface and holds it in its stomach to maintain approximately neutral buoyancy.
Shark bite: The large eyes of the crocodile shark suggest nocturnal or deepwater activity, and possibly a habit of moving toward the surface at night and away from it in the day.
Shark bite: Most of the basking sharks that have been caught are female (30 females caught to every one male), which indicates a possible separation of the sexes, either by time or location.
www.pbs.org /wgbh/nova/sharks/world/lamniformes.html   (890 words)

  
 Megamouth shark
This large, fl, blubbery shark was unknown to scientist until one animal accidentally was captured in 1976 outside Hawaii.
The megamouth shark has a large head with a distending mouth about 1 m wide.
It is the only known shark victim of the cookiecutter shark owing to its soft skin and midwater habit.
www.sharkology.com /mega.html   (191 words)

  
 Fact Sheet: Biology of the Megamouth Shark
That particular shark, which was a 446 cm long male, was caught unawares by a U.S. Navy ship off the coast of Kahuku Point in Oahu, Hawaii, as they pulled up their drag anker in which the shark had become entangled.
The fourth megamouth shark, a large male, was found on the sandy shores of the Shizuoka prefecture, Japan, on January 23, 1989, before the animal was rewashed into the ocean (Nakaya, 1989).
The shark was chased for two whole days and spent its days in medium depths of 149 m (at a local water depth of 700 - 850 m) and nights in medium depths of 17 m.
www.sharkinfo.ch /SI1_99e/megachasma.html   (1279 words)

  
 Megamouth Shark - Definition, explanation
The Megamouth Shark (Megachasma pelagios) is an extremely rare and unusual species of shark, first seen in 1976, with 32 specimens having been found as of 2005.
Like the basking shark and whale shark, it is a filter feeder, consuming plankton and jellyfish, and is distinctive for its large head with rubbery lips.
On October 21 1990, Megamouth #6 was found entangled in a drift gillnet off Dana Point, California, taken alive, and then released after tracking devices were attached; it was observed to move close to the surface at night and deeper during the day.
www.calsky.com /lexikon/en/txt/m/me/megamouth_shark.php   (416 words)

  
 Summary of Megamouth Sharks Megaschasma pelagios Taylor, Compagno & Struhsaker, 1983
The shark measures 5.63 meters (18.47 feet) in length, 2,679 lbs in weight, and its mouth is 1.15 meters (3.77 feet) in diameter, which the museum says is the world's largest of its kind yet reported.
The megamouth was hoisted onto a truck with the assistance of a lift and was transported to the Toba Aquarium where it was placed in a freezer.
Megamouth # 37 was caught in a commercial shark gill net in the waters near Tortugas Bay, off the west coast of the peninsula of Baja California, México.
homepage.mac.com /mollet/Mp/Mplist.html   (1690 words)

  
 Sun.Star Cagayan de Oro - Megamouth shark found dead in Oro   (Site not responding. Last check: 2007-10-28)
A MEGAMOUTH shark (Megachasma pelagios) believed to be a female was enmeshed in the fishing net of one fisherman in Barangay Agusan Sunday dawn, said to be the 25th captured and killed worldwide.
Gallentes said the endangered shark was enmeshed at 20 fathoms deep and that fisherman Casañares was helpless in untangling it.
Of the 24 recorded megamouth findings throughout the world, two were found in Cagayan de Oro, megamouth 11 and megamouth 18 and Megamouth 11 in Feb. 20, 1998 and megamouth 18 in January 6, 2003.
www.sunstar.com.ph /static/cag/2005/01/31/news/megamouth.shark.found.dead.in.oro.html   (416 words)

  
 THE FASTEST SHARK
Migrating mako sharks travel to the middle of the atlantic ocean and then trun back towards the USA.The sharks do not goo further because from the middle of the ocean to europe the water is not the temperature they perfer to swim in.
The sixth megamouth, captured and tracked in Dana Point, California in October 1990, was the subject of the first tracking study.
Of these, only the whale shark, the megamouth and the basking shark are plankton feeders.
mysite.wanadoo-members.co.uk /the_deep_blue_sea/page3.html   (812 words)

  
 Asia Dive Site | Asia Dive News : Philippines
The shark, which was estimated to weigh one ton, was found by fishermen struggling to free itself from a net just off the Bayawan coast, some 100 kilometers south of Dumaguete City.
Sightings of megamouth sharks in the Philippines were recorded in Cagayan de Oro City in 1998, 2003 and 2005, and in Tigbauan, Iloilo in 2004.
The megamouth shark is characterized by a distinctive white band on the anterior surface of the snout.
www.asiadivesite.com /news/phils-310106.php   (437 words)

  
 Megamouth Shark
Megamouths are so rare that they were not known to exist until the first one was discovered off the coast of Hawaii in 1976.
This would be the sixth Megamouth seen by man. When he hauled up the net, the fisherman knew that he had something unusual and he towed it seven miles by the tail, back to Dana Point Harbor.
This Megamouth, like the previous five, was a male, which was evident by the claspers on the underside of the shark.
www.sharkmans-world.org /mega.html   (1328 words)

  
 Shark Info
The goblin shark is as bizarre and mysterious as its name implies: a flat horn points from its forehead while its protruding jaws reveal a toothy overbite.
The megamouth Shark is five meters long and weighs approximately 750 kilograms.
This shark behaves similarly to the fish of the deep scattering layer.
www.westenddayschool.org /Peter/sharkinfo.htm   (528 words)

  
 Discovery Channel - Sharks
The Megamouth shark is one of the most rare and most mysterious members of the shark family.
Megamouths are the third known species of planktonivorous shark, alongside the whale shark and basking shark.
Megamouths seem to feed near the surface at night and retreat to the depths during the day.
www.discoverychannel.co.uk /sharks/detail/megamouth/index.shtml   (224 words)

  
 Biology -Scuba Diving Adventures
When the first megamouth was captured a new shark family, genus and species had to be erected.
Others disagree with this idea and suggest that the Megamouth is relatively derived and forms a sister group to the mako, white and porbeagle sharks.
The sizes of all reported megamouth sharks were maximum at least 550cm (17ft).
www.highclass-adventure.com /biology_e/biology_megamouth.php   (1112 words)

  
 Megachasmidae: Megamouth Shark
Examined on shore by ichthyologist Leighton R. Taylor, it soon became clear that the huge, rubbery-lipped fish was indeed a shark species, genus and family entirely new to science.
Based on similarities in dental, gill-raker, cranial, and other skeletal characters, Maisey concluded that Megamouth was most closely related to the Basking Shark (Cetorhinus maximus), suggesting that Megamouth should be included with it in the family Cetorhinidae.
According to Compagno's interpretation, the Megamouth Shark is ancestral to the threshers and only distantly related to the Basking Shark.
www.elasmo-research.org /education/shark_profiles/megachasmidae.htm   (743 words)

  
 ADW: Megachasma pelagios: Information
The Megamouth Shark was recently discovered in deep water off of the Hawaiian Islands and near the shores of California, Japan and Western Australia.
Little is known about the economic importance of the megamouth shark, though sharks in general have proven to be an essential element in the aquatic ecosystem.
In areas where sharks were killed because of the belief that they threatened fisheries by preying on certain fish, a significant disruption of the ecosystem (such as overpopulation of small fish and planktonic animals) occurred.
animaldiversity.ummz.umich.edu /site/accounts/information/Megachasma_pelagios.html   (422 words)

  
 get megamouth shark   (Site not responding. Last check: 2007-10-28)
The megamouth shark, Megachasma pelagios, is an extremely rare and unusual species of shark, discovered in 1976, with 36 specimens known to be caught or sighted as of 2006.
The Megamouth Shark, Megachasma pelagios, is a large, slow-swimming...
MEGAMOUTH SHARK Discovered in 1976, the Megamouth is a filter feeding shark that grows to be 16.5 feet (5 m) long.
www.axflower.com.cn /megamouth_shark.asp   (224 words)

  
 Great White Shark by Shark-bite.com
Related terms include shark attack and avila, shark attack survivors, great white shark orange county, bahamas shark attack, and pictures of a megamouth shark.
Related phrases are great white shark orange county, bahamas shark attack, shark attack and avila, pictures of a megamouth shark, and shark attack survivors.
Other phrases are shark attack survivors, shark attack and avila, bahamas shark attack, great white shark orange county, and pictures of a megamouth shark.
www.shark-bite.com /great_white_shark_t.html   (545 words)

  
 DAILY STAR: Negros Oriental
Sightings of megamouth sharks in the Philippines were recorded in Cagayan de Oro City in 1998, 2003 and 2005, and in Tigbauan, Iloilo in 2004.
Information on the megamouth shark (Megachasma pelagios) gathered from the website of the Florida Museum of Natural History says this shark is the most primitive living species within the order Lamniformes although the first megamouth shark was captured only in 1976.
The megamouth shark is characterized by a distinctive white band on the anterior surface of the snout.
www.visayandailystar.com /2006/January/27/negor3.htm   (442 words)

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