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Transcript of Nurse Shark
Nurse sharks are large sluggish and bottom-dwelling. They are known to be harmless to humans although they will attack if they are provoked. They have very strong jaws to help break open the shells of shellfish, they have a stout body and a wide head, they have barbels to act as taste testers, Their fourth and fifth gills are closer together to help them breathe when they rest at the bottom, they also have spiracles behind the eyes that take in water for breathing when they rest at the bottom. They are grayish-brown in color and the young have spots.
Bottom dwelling fish
Nurse sharks are nocturnal hunters, they have barbels(thin-whisker like organs) on the lower jaw in front of the nostrils to help sense and taste food.
You Can find Nurse Sharks at the bottom of sandy beaches where the waters are worm in the Western Atlantic Ocean and/or the Eastern Pacific Oceans. You may also find them in coral reefs.
Size: 2-13 feet
the largest found was 14 feet long weighing at 730lbs.
Life Span: they have been able to live in captivity for 25 years.
Reproduction and Sexual Maturity:
Nurse sharks reach sexual maturity at 15-20 years. They reproduce by aplacental viviparity which is when fertalized eggs develop within the body they then hatch inside the mothers body and she gives birth to about 20-30 pups a liter.
Nurse Sharks names were given to them based on the sucking sound they make when feeding, it sounds like a nursing baby.
Nurse Sharks do well in captivity.
They are very lazy, that even when the warm waters they live in get cold they do not migrate to find warm water they just simply reduce activity.
Nurse Shark teeth rotate in rows of three, if they loose one the tooth behind will rotate forward and the new tooth will grow in at the third row, always.
These sharks hunt solitary but when it comes to resting they pile on one another, litterally.
(Ginglymostoma cirratum), is a shark in the nurse sharks (Ginglymostomatidae) family, the only member of its genus Ginglymostoma.
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