Why Do Sharkss Sleep?

Sharks do not have skeletons, but just cartilage. Also their jaws can move independently without any of their other body parts. It allows them to have a stronger hold on their prey. Sharks have oil in their liver that allow them to eat less often. So when they eat us up, they must be really hungry. Their fins help them feel vibrations of other creatures so that they can get into position to pounce on their prey.

Sharks are aquatic creatures and very important to the living with lots of information humans may not understand. To start off, femeles give birth to 7-9 sharks per litter that are 3-4 feet at birth. Next humans believe all sharks are monsters but out of 400 species only 4 sharks have been claimed to attack on humans. Lastly sharks attack for 2 main reasons one reason is for defense and predation. They attack in defense when humans are in or around their territory they attack in predation mistaking people for seals. In conclusion sharks are creatures that humans are still learning about and try to understand them better.

Sharks have been in our oceans for almost 450 million years. Those millions of years of evolution have allowed many different shark species to develop abilities, and to become perfect predators.

Most sharks eat their prey whole, or tear off large chunks of flesh at a time.

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 are one of the oceans top predators. They vary in size from the extremely small dwarf shark, to the colossal whale shark. Sharks can be found all across the world’s oceans, from the tropic waters of Hawaii to the sub zero temperatures in the Artic oceans. Of the hundreds of sharks a select few species have actually been recorded in the Artic. Of these few, only three of them spend the majority of their time in these harsh, freezing waters. These sharks are the Greenland, Pacific Sleeper, and Salmon sharks.

Many people call sharks beasts, terrible things, killers, but they are not. For instance sharks need to eat to just like humans. Sharks can eat all day. When sharks eat too much they throw it up and eat more. Sharks fend for themselves when they are hungry they might find other sharks and eat them. Sharks eat squid, shrimp, sardines, tuna. Besides sharks can never stop moving so they don't’ stay in one spot. Lastly sharks might look mean but they are

The great white shark has two types of muscles-red and white. Red muscle is aerobic; thus, it needs oxygen to function. This muscle contains myoglobin. The main function of the red muscles is used just for swimming. The white muscle is anaerobic-doesn’t need oxygen. White muscles primarily function for sudden bursts of speed when

They can swim at thirty five miles per hour(Institution, Smithsonian). They also have seven rows of teeth(Institution, Smithsonian). They have a total of three hundred triangular serrated teeth(Bradford). When Great white sharks are in the womb they supposedly swallow their own teeth. The first time they sink their teeth in their prey, it is called a sample bite. Sharks normally go up to their prey and taste them to make sure the want to eat them(Bradford). That's why most attacks are not fatal, because the shark tastes the human and thinks yuck that is not what I want to eat and spits them back out. They don't normally mistake humans for food considering only five to ten happen every year(Bradford). Once they sense food they need to get to it fast. They can swim up to fifteen miles per hour(1). Great Whites have to be fast at Cape Cod because they can not sneak attack the

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.

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

It’s important to realize what sharks are capable of. For example, it states in “What do you know about Sharks?” by Sharon Guynup that “[the dusky shark] exerts 18 tons of pressure per square inch on a victim.” That only being one of hundreds of species one

Sharks have a long history, they can be dated back to over 400 million years ago, one of very few species that live for such a long period without distinction. Within over 400 different species, the smallest shark is only 17 cm in length which is the dwarf shark; while the largest

Sharks have a very different breathing system than most animals that live in or on this earth. Sharks also receive oxygen from the water through gills, yet, unlike fish, sharks do

b) Sharks try so hard to become unhooked that they end up suffocating themselves. Most of time the long lining is not meant to catch sharks but other species, and so then the Sharks are just thrown back to ocean as a waste. This process is call bycatch.