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Manta Ray

Giant Oceanic Manta Ray

Taylor Eggers

on 21 February 2013

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Transcript of Manta Ray

Manta Birostris Giant Oceanic Manta Ray Body Structure Works Cited Defense and Predators/Prey •No system of defense
•No stinger
•Their colors blend and they can swim quickly
•Only predators are large sharks and sometimes orcas
•Feed on shrimp and plankton mainly. Some small fish. Habitat •Subtropic waters
•Need warm waters with a food source
•Global warming has expanded their habitat, but increases danger
•Pollution results in inability to digest food Reproduction •Ovoviviparous
•Females reproduce when they reach 16 feet; males reproduce at 13 feet
•1-2 pups in each litter
•Newborns weigh 20 pounds and are 45 inches wide
•Females cause a spontaneous abortions when they sense danger

Threats Average width of 23 feet in the ocean
Triangular shape “wings”
Weigh up to 5,000 pounds
18 rows of teeth on the lower jaw
Dark on top; light on their underside
Flattened body for life on the sea floor
Visit "cleaning stations" with wrasse, remora, and angelfish
Conservation •Many petitions against sale and trade of parts
•Protected areas in Hawaii and Australia
•Low international protection
•At current rates, it will soon be endangered •Caught for their gill rakers in China
•Caught as bycatch
•Were once caught and harvested for their liver and oils
•Low reproductive rate
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