SHARKS :: essays research papers

Out of all the species walking, flying, slide or limpid, at that place bent many who give up been around as long, survived as well, or come in so many shapes and kinds as the shark. The soonest evidences of sharks are isolated spines, teeth and scales that appeared rough 430 million years past in the Silurian Period, known as the "Age of Fishes". chisels have got a sleek, streamline design which helps them swim without using up a lot of energy.They for certain need to conserve their energy because they neer really sleep and most of them never stop swimming.Some sharks are fierce predators, and would be expert to sap you if they encountered you. Almost any shark six feet or long-dated is a potential danger, but three species have been identified repeatedly in attacks the Great White Shark, the Tiger Shark and the Bull Shark . All three live world wide, reach large sizes and eat large prey such as marine mammals or ocean turtles. But most sharks never grow long er than five feet and never even see anyone with legs and arms anyway. People kill thousands more sharks both year than sharks kill people.Sharks take about as long to hop on as we do. Some of them become adults in their teens. A mother shark carries her babies inside her body while they develop, sometimes for more than a year. make up so, some sharks are born inside an egg which they have to chink open. They spend early portions of their lives in nursery grounds. Some of the advantages sharks have everyplace people is that they keep growing new teeth, they dont have breakable bones, and they are not prone to get cancer. Sometimes sharks are referred to as swimming computers because of the six senses which they possess vision, hearing, vibration, smell, taste and electro-perception.Sharks come in many shapes, sizes, and colors. They have different personalities, and they live in oceans all over the world. Not overmuch you can say about sharks is true for all of them, but there are a few things you can say about the word form of most sharks. They breathe through gill slits, have rigid fins and they dont have a bladder. The Whale Shark is the biggest creature in the ocean, about 11 times taller than your Mom or Dad, and weighing in at about 2,000 pounds. A Whale Shark wouldnt be too interested in eating you, but you could offer him about half a long ton of teeny fish, crustaceans and little drifting invertebrates and he would be very happy.