what is a shark?

Answer 1

Sharks belong to the group of fishes called Elasmobranchii, which also includes the rays, skates, and ratfish. The Elasmobranchii are all fish that have no bones, only cartilage. Cartilage, a strong fibrous substance, is softer than bone; our nose and ears are made of cartilage. But, some parts of their skeleton, like their vertebrae, are calcified. There are about 368 different species of sharks, which are divided into 8 orders. These different families of sharks are very different in the way they look, live, and eat. They have different shapes, sizes, color, fins, teeth, habitat, diet, personality, method of reproduction, and other attributes. Some types of shark are very rare (like the great white shark and the megamouth) and some are quite common (like the dogfish shark and bull shark).Sharks vary greatly in their diets, but they are all carnivores.
Some (like the great white, mako, tiger, and hammerhead) are swift predators that eat fish, squid, other sharks, and marine mammals.
Some (like the zebra horn shark, angelshark, and wobbegong) are slow-swimming predators that crush and eat shellfish (crabs and clams) from the ocean floor.
Others (like the whale shark, the basking shark, and the megamouth) are filter feeders that sieve tiny bits of plankton and small animals from the water as they swim with open mouths. They eat huge amounts of these tiny animals and plants.Sharks live in oceans and seas all over the world, and even in some rivers and lakes, especially in warmer waters. Some sharks live near the surface, some live deep in the water, and others live on or near the ocean floor. Pelagic sharks (living in the open ocean) include the great white shark, the basking shark, etc. Benthic sharks (living at the ocean floor) include the zebra horn shark, the wobbegongs, and the angelshark, which usually have flattened, camouflaged bodies that let them hide in the sea bed. Some sharks even venture many miles up into the fresh water of rivers like the Mississippi in the USA and the Amazon in Brazil. The bull shark (Carcharhinus leucas) sometimes ventures into fresh water. Some sharks live in relatively warm waters (hammerheads, bull sharks, and tiger sharks). Other sharks, such as the thresher, mako, basking and blue shark, live in temperate water (which is neither hot nor cold). Others, including the dogfish, Greenland, and goblin, live in cool waters. Some sharks stay in the same region their entire lives while others travel across oceans.

Answer 2

Sharks

Answer 3

A shark is a giant fish that lives in the ocean. Contrary to Hollywood most sharks dont kill people. Actually there are only three kinds of shark well known to attack man. They are
The Tiger Shark, Great White Shark, and The most aggressive is the Bull Shark. To avoid being attacked by a shark stay away from sandbanks, dont swim after fishing, dont wear shiny objects in the ocean, and dont swim if you are bleeding or have to urinate body fluids attract them. That is a great summary.

Answer 4

You really don't know what shark is?
This reminds me of a true story about a Singaporean kindergaten kid. That kid has got an assignment to draw chicken.
And what did he draw???
He drew a piece of fried chicken from Kentucky Fried Chicken...!
Sadly enough many Singaporean kids don't know the real animals.

Answer 5

a shark is someone that pretends to be bad at pool and then takes all your money after luring you in

Answer 6

Consult your dictionary. Look under the word "attorney". Maybe there will even be a picture! -RKO- 06/16/07

Answer 7

something i wouldn't mess with or get close to. its like a huge fish with about 1000 teeth and it senses blood and will attack a person if they mess with it or even if you near them. its not a pretty site ,they live in the salt water,i don't think they can see but they have grate hearing and they can swim very very fast.

Answer 8

A big fish that eats meat and comes in all sorts of speceis. IT HAS A LOT OF TEETH!!!!!

Answer 9

Something I wouldn't want as a pet!

Answer 10

Very teethy