Monday, 7 September 2015

Basic facts about sharks



SHARKS
Sharks have no bones! Believe it or not their skeletons are made of cartilage, a lighter and more flexible tissue than bone. They have a series of 5 to 7 gills on the side of their body in which they breath through. With multiple rows of teeth sharks loose teeth all the tome while more teeth are always growing in place of the teeth they loose. they are covered by a layer of scales that complete the outer layer of the shark in other words, their skin. it top of a shark is normally a dark colour and the bottom is a light or white colour, this is to help them blend in and hide from their prey and predators.

POPULATION
With over 456 species of sharks in the world it is hard to know the exact number of sharks there are. Sharks are however decreasing in numbers because of the threats they face.


HABITAT
Sharks are adaptive creatures and have adapted to various habitats and temperatures from shallow waters near a coastline to the deep waters. some sharks can also be found in fresh water.




BEHAVIOUR
All sharks feed and behave differently some sharks just open their ide mouths and collect small things like krill and plankton while others launch surprise attacks on bigger animals such as seals or sea lions, others can attack a school of fish all at once like a feeding frenzy. Most hunt at night.




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