Now you might think why I am going to cover a little about SHARKS?.
I thought it might be helpful for
some of you and to your children as well. My son really love sharks so much to
the extend that he thought that he is a shark. He even played as a shark and
sometimes bit me.. ha-ha. He was so amaze about the characteristic of a shark
and he loves most especially the powerful jaw of a shark by the time he handle
his prey.
He always carries with him his
toy shark wherever we go and played with it.
And that is why I decided to
write an article about sharks…
Let’s get started…
What is a shark?
Sharks are a group of fish
characterized by a cartilaginous skeleton. Meaning its skeleton is made of
cartilage. Cartilage is a flexible tissue that found in many areas in our body.
Sharks has five to seven gills on
the side of their head, they are the sister group of “rays”. They existed for
more than 420 million years ago. The first discovered evidence of the existence
of a shark was their scales way back million years ago.
There are 470 known shark species
as of today. Most sharks can be seen 2,000 meters down depth on the ocean. Most
shark do not live on freshwater but there are few species live on both seawater
and freshwater. Bull sharks and river shark are the group that can live in both
seawater and freshwater. Most sharks also have to keep moving in order to
breathe.
There are five well known sharks
today and it was classified based on their capability to hunt food, physical
structure, speed and strength.
Well known sharks:
Great White Shark
Blue Shak
Tiger Shark
Mako Shark
Hammerhead Shark
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