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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
How do great white sharks keep itself safe in its habitat?
Since Great White sharks are Apex predators, all they really do is control the populations of animals beneath them.
That control would then lessen the burden on the environment of too many fish taking too much of the oceans resources.
So it helps conserve nutrients and it keeps other animals in check. Besides that though it seems to serve no other purpose as far as I'm aware.
Whats the difference between sharks and dolphins?
Sharks
Eggs
No spinal bones
Fish
Eat people (0riginal answer)- This is moronic to say. Sharks are highly afraid of people and will do what they can to avoid them. The majority of shark attacks are due to the animal being provoked or a case of mistaken identity such as a surfer which looks very much like a sea turtle when looking up from beneath. The sea turtle is a natural food source of most sharks. There more fatalities a year due to lightening striking a person than shark attacks. Ar person is more likely to die from a toaster than a shark or a vending machine fall on them.
Dolphins
Live Birth
Spianl bones
Animal (original answer)- Sharks are also considered animals; therefore this is not a true difference. The classiification for Sharks is as follows: Kingdom:Animalia, Phylum: Chordata, Class: Chondrichthyes (cartilaginous). The classification for the Dolphin is as follows: Kingdom: Animalia, Phylum:Chordata, Class: Mammalia. As you can see, the difference splits at their Class.
Suck
Sharks are cold-blooded, and filter the water around them to get the oxygen out of the water, but dolphins are warm-blooded, therefore mammals, who surface to take a breath of air. Not through their mouth or nose like humans, but through their blowholes, a hole in front of their dorsal fin that closes tightly shut when the dolphin dives back down into the water.
dolphins are mammels and need air to survive. However, sharks are fish and have gills. unlike the dolphin who has lungs.
Sharks are cold-blooded, and are a species of fish; Dolphins are warm-blooded, and are mammals.
A shark has big sharp teeth and dolphin has got little and not sharp teeth
a sharks top fin is straght up with ridges and a dolphins top fin is curved
How long sharks being living in earth?
some early fossils suggest as long ago as 400-450 million years ago. There is of course some debate over the specifics, however nonetheless.... a long long time.
They cant be born but if you mutated it im sure you would be able to get a two headed shark
What traits make sharks and rays in subclass Elasmobranchii successful predators?
The elasmobranchs are distinguished by separate gill openings, http://www.answers.com/topic/amphistylic-vertebrate-zoology or http://www.answers.com/topic/hyostylic-vertebrate-zoology jaw suspension, and sensory http://www.answers.com/topic/ampulla (of Lorenzini) in the head region. also the lateral line system. their are probobly other characteristics but this is a good short list
What senses do sharks use to locate their pray?
The Great White Shark doesn't stalk its pray, it senses the minute vibrations made by a an injured fish with the pours on its skin, as well as being able to smell blood
from over 100 feet away.
we should save sharks because if we don't have sharks, lots and lots of us would suffer and it would be the death of the reef, if we save sharks, we will never suffer, and it would not be the death of the reef which is good!
What countries do sharks live in?
Hammerhead sharks live in tropical waters in both the Atlantic and Pacific oceans.
Can basking sharks close their mouth?
It is taking in plankton for food or water for air in its gills
How long was Bethany Hamilton surfing until she got her arm bit off?
The shark that attacked Bethany Hamilton was a 14 ft. tiger shark.
Are sharks and rays bony fish?
yes somewhat they are...as i have learned in school, Sharks, skates, rays and chimaeras are closely related, and belong to the class of vertebrates known as Chondrichthyes. hope that is helpful! Xx
What is a goblin shark scientific name?
The goblin shark gets its name from its unique shaped head which resembles a goblin. These fish live at extreme depths and are rarely seen by humans.
Can sharks live in the Black Sea?
Sharks can and do live in the Black Sea. Leonard Compagno, an international authority on shark taxonomy, indicates in his 'Collins Field Guide to Sharks of the World' two species which occur in the Black Sea: the Angelshark (Squatina squatina) and the Thresher Shark (Alopias vulpinus). There is no doubt that a third species, the Spurdog or Piked Dogfish (Squalus acanthias), also occurs there, but it is strangely absent from the Black Sea on the distribution map. The author warns, however, that many distribution maps are likely incomplete, and that it is quite possible that many species have a wider distribution than illustrated.
How many shark deaths per year?
Sharks rarely ever even attack humans, in fact only 3 shark species are thought to make up 98% of all attacks
More people are killed by dogs each year so be more afraid of them and save sharks!
Why do sharks attack men more than they do women?
Because they have a bigger stumock than the male also they have to feed their children if their pregnant.
Do sharks eat remora sucker fish?
the sharks dont eat the remoras because they have a symbiotic relationships, meaning they both get what they want e.g the shark gets it's dead skin off while the remora get fed, free ride (save energy ) and also get protection.
What gives a fish its buoyancy?
May fish have a little air bag inside them called a swim bladder they add or remove air from this sack so that they achieve neutral buoyancy in the water and thus do not have to exert energy to prevent themselves floating or sinking. If you bring a fish from great depth to the surface very quickly, the fish will not have time to remove air from the swim bladder and it will explode, killing the fish.
When divers collect fish at depth, to keep them alive, they have to stop and let air out of the swim bladders (with a needle) on the way up.
How many sharks got killed last year?
More than 80 Million sharks die per year just for their fins. Thousands more sharks die per year by natural causes. Putting everything together more than 100 million sharks per year die from natural causes accidental and Murdered by man. Sharks can't reproduce as fast as they are being killed and will soon become endangered as some species of shark already are. Japans fishing industries are the main culprits for our depleting ocean resources.
Thousands or dolphins and whales and millions of shark and tuna die every year just to feel the people that live in the tiny island of japan! JUST JAPAN!
