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Sharks: The scariest animals in the sea.
Hello friends, and welcome to a new Happy Learning video. Today we are going to talk about one of the most famous of all the fish in the ocean, the one who scars us the most, presenting…the shark.
First of all, what we must know about sharks is that they are fish and like all fish, they have gills which allow them to breath under water.
The fish´s body is covered by scales and in the case of the shark, the scales are so hard and rough that a long time ago the sharks skin was used as sand paper.
There are many different types of sharks, almost 400, some measuring just 15cm , which is as small as a Mobil phone, and others, such as the whale shark, reaches up to 14 meters, which is a lot longer than many of the large trucks you can see on the road. There are also very odd looking sharks such as the hammer head.
Sharks are carnivores and are characterized for their excellent hunting skills. When hunting, they use their fantastic sense of smell as well as their strong jaws full of sharp pointed teeth. As the sharks use their teeth so frequently, they tend to fall out easily but it is not a problem as they grow back again. During a shark´s life time they could even have up to 30,000 teeth. That’s a lot of teeth!
Another interesting and curious fact about the shark is that they can go up to 6 weeks without eating, that’s a month and a half! It is for is reason that they get really hungry.
Sharks are cartilaginous fish, meaning their skeleton is made of cartilage instead of bone.
The most famous sharks of all, is without a doubt the great white shark. The great white live in warm waters, and can weigh between 700 and 1.100 kilos, Their body is so big and robust…they are a bit scary, don’t you think?
The whale shark is the biggest of all of them, not only the biggest of the shark family but the biggest of all the fish in the sea. It weighs 20 tons, meaning 20 thousand kilos and is also known as having the longest life span, living between 70 and 100 years.
Well it is also true that we do leave them to live in peace. Though did you know that sharks are in great danger of being extinct? There are many different kinds of sharks which are about to disappear and this is causing the whole ocean to be at risk. The oceans and seas are healthy, and they need to have enough sharks to ensure the balance between the various different species. Without this balance, we have no idea what could happen, but nothing good, I am sure.
For this reason it is so important to take care of them. We should not throw rubbish and plastic into the sea and we must always defend nature by picking up whatever object could harm it. Because if we defend nature, we are also defending life, and all living creatures in it, including us humans.
Well now you have learnt a few more important facts about these amazing fish, the sharks. Aren’t they just so fascinating?
So it’s goodbye for now friends and don’t forget to subscribe to Happy Learning.