0
Sharks
When many think of sharks, they think of the movie Jaws or a dangerous man-eating fish. In reality, sharks is a large group of fish that includes very small to much larger fish. Some can be harmful to man and others are harmless. To delve into this interesting and diverse group of cartilaginous saltwater fish that have sharp teeth and a bad reputation, ask your questions in this category.
5,520 Questions
Blue Sharks are endangered because humans keep on catching them for there fins then they throw them back in the water and they drowned. Or they keep there jaw and sell it for money used for jewelry.
How big do great white shark teeth get?
sharks can grow to 50 feet but not all can
The length of a shark vary widely from 10 centimeters to 12.64 meters. The smallest known shark is the dwarf lantern shark, or dwarf saggitaria. The largest know shark is the whale shark, or rhincodon typus.
The largest know shark ever is now extinct. It is commonly called the megalodon, but the scientific name for it is carcharocles megalodon. It probably grew to a length of about 60 feet.
Sharks range in size from a couple feet to 40 feet. Great white females generally max out at about 23-25 feet.
Older tiger sharks, can and do, eat turtles Green sea turtles can comprise 7% to 27% of a older tiger's diet, depending on region. If the shark is large (or the turtle small) they will swallow the animal whole. If the turtle is larger, a tiger shark has the dentition to bite through the shell.
To rid their bodies of a shell, which takes a very long time to dissolve in their very strong stomach acids, tiger sharks use gastric eversion. Sharks who do this relax their stomach muscles and use abdominal pressure to prolapse and speedy retraction of the stomach to empty indigestible particles, parasites, or mucus, researchers speculate. This may also aid them in keeping a healthy alimentary tract.
Are there sharks in Long Island?
Yes there are many types of sharks in Long Island Sound. Sand Tiger Sharks are the most common which are in the aquarium at mystic. There have been sightings of Great White Sharks in the sound also. Brown, Hammerhead, and Thresher sharks have all been caught in Long Island Sound.
How does a shark hunt pray with help of skin?
they circle the prey then strike from underneath
Sharks hunt by (if a school of fish) circling around the group forming them into a ball then the shark opens it mouth and swims threw the group. If a larger animal (like a Human) the shark will bite and rip the prey's limbs off. Note: Sharks usally take one bite of a human and spit it out.
sharks also detect their prey with sensory receptors that run along their sides. These receptors make up the "lateral line," an organ similar in function to the ear that can feel pulses or vibrations in the water. A shark might sense the flailing of an animal in distress and swim closer to investigate.
What would win in a fight an American alligator or Nile crocodile?
Since most crocs are larger and more aggressive, I would go with the crocodile.
Can a whale swim faster than a shark?
5.8
got this from another site but it will help u
Sharks typically swim with the even, liquid grace of a creature completely at home with its place in the Universe. Large sharks generally cruise at a leisurely 1.5 miles (2.4 kilometres) per hour. Because most species fare poorly in captivity, the maximum swimming speed of a shark has seldom been measured. The Blue Shark (Prionace glauca) is an open ocean glider, planing on wing-like pectoral fins and flattened belly. There exists a dubious record of a small Blue Shark about 2 feet (0.6 metres) in length which was found to swim steadily against a current at 17.7 miles (28.5 kilometres) per hour and was reported to achieve 43 miles (69 kilometres) per hour in short bursts. The most reliable record of a Blue Shark at speed is 24.5 miles (39.4 kilometres) per hour for a 6.5-foot- (2-metre-) long individual.
The Shortfin Mako (Isurus oxyrinchus) is probably the champion speedster among sharks. It is an open ocean sprinter, with a highly streamlined body, a lunate tail supported by keels, a sharply pointed snout, large eyes and some of the wickedest-looking teeth in sharkdom. Like the White Shark (Carcharodon carcharias) and a few of its lamnoid relatives, the Shortfin Mako has a jury-rigged circulatory system which enables this species to retain metabolic body heat, making it functionally warm-bodied. It is also a spectacular and much sought-after gamefish, often leaping repeatedly when hooked. Among sport anglers, this explosive activity combined with dazzling ultramarine flanks has earned the Shortfin Mako the dramatic honorific, "Blue Dynamite". Famed western author and big game angler Zane Grey held this species in particularly high regard, noting that hooked Shortfins typically leap in sets of three, with the third leap usually the highest - sometimes as much as 15 to 20 feet (5 to 6 metres) above the surface. Calculations show that for a mako to leap 20 feet (6 metres) into the air, a speed of 24.6 miles (39.6 kilometres) per hour is required - and this for a shark impeded by the drag of a fishing line trailing from its mouth.
Underwater and unimpeded by a fishing line, the Shortfin Mako has been reliably clocked at 31 miles (50 kilometres) per hour, and there is a claim that one individual of this species achieved a burst speed of 46 miles (74 kilometres) per hour. But it is extremely difficult to get a fish in the wild to swim in a straight line over a measured course. Laboratory measurements of numerous kinds of fishes - representing a wide range of body sizes - swimming against an artificial current have revealed a surprisingly uniform maximum burst speed of about 10 times the body length per second. Thus, for an average-sized, 6.5-foot (2-metre) Shortfin, its theoretical maximum speed might be something on the order of 45 miles (72 kilometres) per hour. Yet some estimates of the top-speed of a Shortfin Mako are considerably higher.
In an effort to determine the maximum swimming speed of the Shortfin Mako, two New Zealand researchers undertook a simple experiment which yielded astonishing results. Off the coast of Auckland, aquarist Craig Thorburn and film-maker Mike Bhana videotaped a 3-foot (1-metre) juvenile Shortfin Mako - estimated to be about one year of age - chasing a baited camera trolled behind their boat. The shark seemed to have no trouble keeping up with the towed array at medium speeds, so the researchers decided to accelerate to see just how fast the little Mako could go. From this experiment, Thorburne and Bhana estimate that the shark accelerated from a dead stop to cover a distance to the bait of more than 100 feet (30 metres) in just two seconds.
If, as Thorburn and Bhana attest, the shark did indeed start from a standstill - which seems behaviorally unlikely - to cover the stated distance in the stated time, the little Mako must have achieved an acceleration of at least 50 feet (15 metres) per second, per second. This acceleration rate rivals that of the very fastest sport cars and seems rather improbable. Nevertheless, using this figure as the constant rate of acceleration, calculations suggest that by the time this little Mako reached caught up with the bait, it reached a top speed of about 68 miles (110 kilometres) per hour! But it should be stressed that if any of Thorburn and Bhana's estimates (the shark's initial speed, the actual distance covered, the time required to reach the bait, etc.) is inaccurate, this startling figure could be 'off' by quite a bit.
Not surprisingly, Shortfin Makos are able to catch even the fastest of fishes - there is a record of a 750-pound (340-kilogram) Mako with a whole 120-pound (54.5-kilogram) Broadbill Swordfish (Xiphias gladius) in its stomach; however, it is uncertain whether the shark out-sprinted or out-maneuvered the swordfish. The White Shark is one of the sea's paramount predators, able to catch and consume such speedy prey as tunas, sea lions, and dolphins. It is therefore natural to wonder about its top speed.
Unfortunately, no one has yet measured the swimming speed of a White Shark going flat-out. Analysis of White Sharks attacking a video camera-equipped surfboard off the South Farallon Islands, California, give some indication of this animal's attack speed. Current consensus among shark scientists is that the top swimming speed of the Great White is at least 25 miles (40 kilometres) per hour. My own rough, back-of-the-envelope-type calculations - using several methods - suggest that the White Shark may achieve burst speeds of 35 miles (56 kilometres) per hour or more. That may not seem very speedy, but it's seven times faster than the finest Olympic swimmer and probably at least ten times faster than you or I could manage.
What does the worlds biggest shark look like?
There are a great many deformed sharks in the world. Most of these sharks cannot be recognized as sharks and die because they cannot swim properly.
How many people a year die from gator attacks in Florida?
The exact number of people who die yearly from alligators vary. However, there has only been 47 fatalities from alligators since 1950. This means that some years have no deaths from alligators.
What is the worlds biggest shark in the world?
Whale shark then the basking shark. However, the largest shark to have ever lived is believed to be the megalodon which reached 65 feet in length. However, this shark went extinct 1.5 million years ago.
What does the blacktip reef shark eat?
The blacktip shark, also known as the blacktip reef shark, does not swim more that 33 feet below the ocean surface. Their diet consists of cuttlefish, crabs, squid, crabs, octopuses, and other reef fish.
What kind of shark do people kill just for their fin?
Humans use shark fins for shark fin soup and humans use shark liver for soap they also cut out the liver and throw the dead corpse of the shark out of the boat into the ocean
The shark's meat is thrown out because it is of low value. They also eat their fins it is said to be a very tasty dish it is very sad to hear such things.
How do sharks defend their territory?
Most sharks really don't need to "defend" themselves as they are pretty much at the top of the food chain. Sould something challenge that fact they would depend themselves by quickly swimming away or biting with their teeth.
What is the structual adaptations of a shark?
Sharks have very many adaptations, structural adaptation are something you can use your 5 senses to find the structural adaptations of sharks are the FINNS, teeth, body, and tail.
How can you tell if a rainbow shark is a male or female?
You can tell the difference between a male rainbow shark and female rainbow shark by looking by the sharks (anal) part. If there is a black outlined tail then YES it is a boy. But if the shark is lighter colored then its a female. You can determine this after the sharks first 3 to 4 months of living.
-Fish ExpertDoes it feel like the shark has hard bones similar to humans?
Since the shark has an entirely different body shape, it's hard to make a fair comparison.
But if you'd pick to similarly sized bones, the shark's would be softer.
Are eels a bony or jaw cartilaginous fish?
it has two types of species
the first is the jawless fish
the secent is not
they sometimes attack humans that's why they're deadly, they think you're a seal but they can only tell if they taste you
they sometimes attack humans that's why they're deadly, they think you're a seal but they can only tell if they taste you
