thase watler presentation black tip shark
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Ladies and gentlemen, boys and girls and
teachers. My name is Thase and today I
would like to tell you some interestinginformation in my Autobiographifical report
On the Black Tip Shark. The reason I
choose Black tips shark is because I find
them very interesting.
Introduction
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Information of the Black Tip Shark
Black Tip Sharks are a species of requiemsharks. It is common to coastal tropical andsubtropical waters around the world. Youcan notice the black tip shark because itsbody is grey in color, but the tips of its finsare black. The black tip sharks mostly livesin the habitats of the coral reefs where
there is warm temperature. This Shark usesits caudal fin to move and it uses itspectoral fins to steer itself. Black tips haveto continue swimming or they will sink tothe bottom of the ocean. Black tips areconsider to be an Apex predator, becausetheir teeth changes throughout their lifetime, sensitive smell receptor and eyes thatadapt quickly to low light levels. Black tippreys on mullets, ladyfish, jacks andoccasionally stingrays. It obtains its foodby circling its prey and then it attacks. Thisshark has no predators because it is astrong and defensive shark. All sharksincluding the black tips use their gills tobreathe in water.
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Distinctive Features
Black tips are stout bodied with a moderately longand pointed snout. They lack an interdorsalridge. The first dorsal fin, near to the pectoral fininsertion,.The pectoral fins are fairly large andpointed.
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SharkSharkBabiesBabiesSharkSharkBabiesBabies
Some sharks lay eggs like birds,
while others have their children
the way humans have theirs. A
black tip shark is a shark like the
nurse shark that deposits their
egg cases in the sea. The babiesinside get their food from the yolk
until the egg hatches. We are
lucky we have parents to protect
us. These eggs did not have
anyone to protect them. There
were many big fish that ate theeggs so it was a chance of them
not surviving. Sharks such as the
horn sharks and the black tip
sharks are known as the
oviparous sharks.
A shark egg..
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Dangers of Black Tip Sharks
Black tips can be very dangerous,
because they are know to be responsiblefor a number of unprovoked attack on
humans around the world. About 20% of
attacks happened on surfers.
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What happened if the environment
changes At this moment Black tip faces treat that comes from the
Commercial and recreational fisheries. The flesh is consumed
by humans or used in fish meal, hides are used for leather, fin
sold to the Asian markets for fin soup and the liver provide
vitamin rich oil. The black tip shark inshore habitat is alsovulnerable to the impacts of human activities, which can alter
or degrade the nursery areas. Any form of sustained humanactivity will modify the natural environment, affect the number
of species in that environment and in extreme cases lead to
extension. The primary human activities causing species
extinction are hunting, collection, and habitat destruction. Of
these three, it is habitat destruction that most significantly
affects biodiversity and sometimes leads to species extinction.
Just think, if someone came and destroyed your home, and
took away your food while you was at it, your odds of making it
would be dim.
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Continuation of environment
This is the case for many species that depend on the
reef, seagrass beds, or mangrove for habitat and
protection, and find themselves out of luck when
their habitat is damaged, dredged up, polluted, or
even removed. The black tip shark are not yet
becoming extinct. However as their being fished, and
habitats become vulnerable to degradation, it is
becoming close to being extinct. I hope careful
fishing management, and good measures are beingtaken to protect the coastal habitat of the Black Tip
Shark so that it will not become in this category.
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THANK YOU
By:
Thase Watler
My resources was taking from the following websites:
http://www.arkive.org/blacktip-shark/carcharhinus-limbatus/info.html
http://en.wikipedia.org/wiki/Blacktip_shark
http://www.nmfs.noaa.gov/sharks/FS_blacktipshark.htm
http://ambergriscaye.com/reefbriefs/briefs50.html
From the book called, Discover Sharks, and my Teacher.