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Megamouth
Shark
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The megamouth
shark is an extremely rare and unusual species. When
the first megamouth was captured in 1976, a new shark
family, genus and species, Megachasma
pelagios,
had to be instituted. Only a few have ever been seen,
with 39 specimens known to have been caught or sighted
as of 2008, ranging through the Indian, Pacific and
Atlantic Oceans. 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. However, the megamouth is considered
to be less active and a poorer swimmer than the basking
or whale sharks due to its flabby body, soft fins,
asymmetrical tail and lack of keels. The megamouth
has a brownish-blackish color on top and white underneath,
a broad rounded snout, and a distinctive large head
with rubbery lips. They can grow to 18 feet in length
and have been recorded at weights of 2,600 pounds.
The capture in a drift net of a megamouth shark in
California in 1990 was very important in understanding
the species. The megamouth shark was tagged and released,
and followed for two days. Its pattern of behavior,
staying at a depth of 50 feet during the night, then
diving to 500 feet at dawn, would indicate it is
a vertical migratory over a 24 hour span.
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Picture of Megamouth
shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 009142 |
Image of Megamouth
shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 002852 |
Photo of Megamouth shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 009145 |
Stock photo ofMegamouth
shark, Megachasma
pelagios, with scuba diver, using housed
video camera, California, East Pacific Ocean
Picture #: 009146 |
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Stock photo of Megamouth
shark, Megachasma
pelagios, with scuba diver, using housed video
camera, California, East Pacific Ocean
Picture #: 009148 |
Photo of Megamouth shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 011184 |
Image of Megamouth shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 009141 |
Picture of Megamouth
shark, Megachasma
pelagios, California, East Pacific Ocean
Picture #: 009143 |
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