Research Paper On Sharks

Pacific sleeper sharks, which are also known scavengers, can glide through the water with little body movement and little hydrodynamic noise making them successful predators. They feed by suction and cutting of their prey. They have large mouths that can inhale prey and their teeth cut up any pieces that are too large to swallow. They show a characteristic rolling motion of the head when feeding. Only in Alaska has the shark's diet been studied - most sharks' stomachs contain remains of giant Pacific octopus. They are also known to feed on bottom-dwelling teleost fishes as well as soles, flounders, Alaska pollock, rockfishes, shrimps, hermit crabs, and even marine snails. Larger Pacific sleeper sharks are also found to feed on fast swimming

The Australian Grey Nurse Shark is also known as the Spotted Ragged-Tooth Shark and as the Sand Tiger Shark ("Australian Threatened Species”). The species is identified by its gray to gray-brown coloration, the possible presence of reddish/brownish spots on the caudal fin and posterior half, their countershading, and by its two almost equally sized dorsal fins. They are known to grow over 3.6 meters in length with the males and females maturing at different lengths, 2.21 meters and 2.2 meters, respectively (McGrouther, 2015). Females also mature significantly later at 9-10 years than their male counterparts, who mature at 6-7 years. Their diet consists of fish,

This article talks about what sharks does in order to survive and what are they capable of doing. According to the article, sharks do not sleep; but rather, they have rest periods throughout their day. Sharks are capable of hearing anything below 1000 Hertz and can also swim up to 20 mph. Sharks skeleton is made up of cartilage rather than bone. According to the article, cartilages are lighter than bones. What keep them from floating are their large livers. Sharks can gather and keep the air into their stomach to keep them from floating.

Blacktip Reef sharks can be located at warm places (59F to 75F) such as, the coral reefs of the Indo-Pacific and eastern Mediterranean, where they keep themselves mostly in the shallow warm waters and where they remain near their food supply. Some locations in where

Bull sharks eat bony fish and small sharks. Spear tooth sharks are extremely rare they inhabit coastal marine waters and tropical rivers. The shark is mostly found in fast moving highly turbid waters over wide range of salinities. There has only been three adult spearhead sharks ever found. So little is known about the adults.

Adapted for a wide range of aquatic habitats, various shark species inhabit shallow coastal habitats, deep-water ocean floor habitats, and the open ocean. With a wide selection to feed off of, as a whole the shark species feed on just about everything. Their diet consists of fish,

Sharks, unlike your average fish, play a different role in the marine ecosystem. While being at the top of the food chain at most times; sharks help to keep other populations of fish with the appropriate size, and by doing that, they also keep other fish and organisms healthy. Over the years, sharks developed an inter-dependency with their ecosystem. They many times eat the fish that are already more debilitated. By doing that, the amount of healthy fish population subdues the debilitated, which means that mainly the healthiest fish will reproduce, originating a generation of healthier and stronger fish. Another impactful role is controlling the spreading of diseases and impeding outbreaks, which also makes a healthier

Also hey are very unique and interesting. They can get up to 15ft long. Next blue sharks like to move around so they don’t stay in one spot for long. At last watching the movie jaws made people have many opinions that are oncel sharks. People find sharks very threatening but they are just like us.

However, most of these are not fatal, and new research finds that great whites, who are naturally curious, are "sample biting" then releasing their victims rather than preying on humans. “It's not a terribly comforting distinction, but it does indicate that humans are not actually on the great white's menu(E.O Wilson)”.Great whites are the largest fish and weighing up to 5,000 pounds have been recorded.Highly adapted predators, their mouths are lined with up to 300 serrated, sharp teeth arranged in several rows, and they have an exceptional sense of smell to detect prey. They even have organs that can sense the tiny electromagnetic fields produced by animals. They usually eat sea lions, seals, small toothed whales, and even sea turtles, and carrion.The original hypothesis for the great white's origins is that it shares a common gene with its ancestor with a prehistoric shark. The only predator that can kill a shark is a whale and sometimes whales aren't fast enough to catch the sharks most times.Most sharks live in depths of waters on 12 degrees to 24 degrees fahrenheit. Great white sharks have a great sense of touch through what’s called the lateral line.It is a line that extends along the middle of the shark’s body from its tail to its head. Found in all fish, it is made of cells that can

Most people are terrified of sharks and want nothing to do with them others love them I’m one of the ones that love them I think they are just misunderstood intelligent creatures and this will help you realize that too. Sharks have been on earth for at least 420 million years ago that’s 200 million years before the first dinosaur! Sharks outlive humans they have been on earth longer and have longer life spans the oldest living shark is 500 years old while the average human can live as long as 70 years in perfect health. Sharks like people come in all shapes and sizes and swim everywhere from the arctic circle to the Caribbean. Some sharks are big some little some long and thin some wide and short they come in every size imaginable and in the weirdest conditions like seas and oceans with other animals ready to eat any injured sharks to lakes hunting fish they live almost everywhere.

To understand why we need sharks, we have to first look at what an ecosystem is. An ecosystem, as described by the Mirriam Webster Dictionary, is “a system, or a group of interconnected elements, formed by the interaction of a community of organisms with

Sharks have been creatures that can date back to over 450 billion years, and have survived through all disaster and still live on Earth today. This is a great feat for anything to stay in existence for that amount of time, and hopefully sharks can continue to live on this Earth and not go extinct. There are hundreds if not thousands of species of shark from when they first swam Earth’s oceans to when they continue to swim the same oceans. The study of sharks is a very interesting and extraordinary topic, being able to put together images of what sharks used to look like compared to sharks now is just amazing. In this vast amount of time sharks have spent on this Earth there has been many things that has changed, through evolution and adaptation. Through research and personal opinion I plan to show how sharks have evolved, what has changed through evolution and the history of

Every Jaws fan knows the shark gets it in the end. What they do not know is that too many sharks have gotten it; and that has caused a rapid decline in the shark population over the past thirty years. Since the 1970's, sharks of the Atlantic and Gulf of Mexico shores have declined eighty-five percent. Sharks are vital animal to our world's ecosystem, and if the decline is not controlled; we could be facing devastating problems in years to come. Information has been obtained from two books: The Shark Almanac by Thomas B. Allen and Sharks, An Introduction for the Amateur Naturalist by Sanford A. Moss. Sources also include a number of online references, among them BBC News, ENS News, The New York Times, and two online scientific

Sea Shepherd Conservation Society’s article “The Brutal Business of Shark Finning” reminds us that sharks play a key role in the ocean as both predators and scavengers.

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 of attacking human beings. But less than 100 shark attacks a year are reported throughout the world. Sharks are most common in warm seas and oceans. Whale sharks, are the largest shark known to man. Sharks are classified in the order