Free Sharks Essays and Papers

INTRODUCTION Although sharks belong to the class Chondrichtyes, there are many different types. Sharks arose about 350 million years ago and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is thought that sharks almost certainly evolved from placoderms, a group of primitive jawed fishes. It took a long series of successful and unsuccessful mutations with fin, jaw positions etc to give us all the different designs of sharks around today. When asked

Sharks Sharks are one of the most feared carnivores in the sea. There are 365 species of of sharks in the sea as we know today. All sharks are carnivores. Most of them eat live fish, including other sharks. A shark's most common natural enemy is an another shark. Most sharks eat their prey whole, or they tear off large chunks of the bodies. Some sharks crush their prey. Others take out small pieces off flesh from large fish. Sharks also feed on dead or dying animals. Sharks have the reputation

as the shark. The earliest evidences of sharks are isolated spines, teeth and scales that appeared about 430 million years ago in the Silurian Period, known as the "Age of Fishes". Sharks have a sleek, streamlined design which helps them swim without using up a lot of energy.They certainly need to conserve their energy because they never really sleep and most of them never stop swimming. Some sharks are fierce predators, and would be happy to eat you if they encountered you. Almost any shark six feet

Biology Mr. Girod April 28, 2014 The Bull Shark The Carcharhinus leucas commonly called the "bull shark" is a very unique shark. The bull shark can live in both salt water and fresh water but is commonly found along the Mississippi River and around Nicaragua. The bull sharks has a very blunt rounded nose giving it a bullish type of appearance thus giving it the name bull shark. The sharks are a dark black to a light grey with a white underbelly. Bull sharks can grow to be about 350 cm long and weigh

Shark Conservation Abstract Arising over 350 million years ago, the shark species has been labeled as a human devourer. Now, with the increase in human population, the demand for shark meat, fins, and cartilage are at an all time high; therefore, the existence of the shark is becoming a concern (Budker 1971). Individuals are conditioned to think of sharks as a negative aspect to the environment, which is prolonging the effort to save shark species from becoming extinct. With that in mind

Greenland Shark Sharks live in almost every part of the oceans, from coastal environments to deep-sea habitats. They also live in the warm waters of the tropics to the cold frigid waters of the polar region. The Greenland shark, also known as “somniousus Microcephalus,” lives in the dark, cold waters of the North Atlantic (I 65). The Greenland shark belongs to the order Squaliforms, more usually known as dogfish sharks. There are 70 species in this order, which includes the spied sharks, spiny dogfish

Sharks kill an average of about 12 humans per year. Humans kill an average of about 11,417 sharks per hour. Unfortunately, that number may not stop growing unless action is taken. Shark slaughter is becoming an ever expanding issue that could have devastating effects if it is not stopped. As a result of a tremendous increase of demand in shark fins in recent years, sharks are being finned and thrown back into the water where they are left to suffer an excruciating death which can take days to occur

number of swimmers in North Carolina that were bitten by sharks this summer, but that does not mean the risk of getting bitten by a shark is getting worse. A recent study focused on California even suggests that the risk is actually dropping all over the world. According to the recent study, California coast visitors are now 91 percent less likely to be bitten by a great white shark then they were in 1950. However, at the same time, shark bites have ground from 0.9 per year [1950s] to 1.5 per year

Do you know how long sharks have existed? Sharks have been around for about 400 million years. There are about 450 species of sharks that have existed on the planet. That is a very long time and a lot of species of sharks! I will tell you about the different species, how long they have existed, the changes that have occurred over time, the similarities that still exist, their migration, and their closest relatives. There use to be 450 species of sharks divided into eight categories. The categories

A tale of mistaken identity: the ragged tooth shark (Carcharias taurus, Rafinesque 1810) and the story behind a misunderstood creature T. Ngcongwane, Dept. of Zoology and Entomology, University of the Free State: QwaQwa Campus, Phuthaditjhaba, Kestell Road, 9999  (+27)79 964 7598  2010141469@ufs4life.ac.za Introduction “Shark! There’s a shark in the water!” Possibly one of the scariest phrases you will ever encounter when out on the beach for a tan or walk. That fearsome predator that has got