Name: Kayan Mohammed Ali
Age: 21
State or province:
Country: Qatar

What are the most dangerous sharks?

Almost any large shark has the potential to be dangerous, however, the four sharks which are most commonly identified as being involved in attacks on man are the white, tiger, bull and oceanic whitetip sharks. Large hammerheads and several species of reef sharks have also been implicated in attacks on humans and even the docile nurse shark will bite if provoked.

For more information on shark attacks, see the "International Shark Attack File" at: http://www.flmnh.ufl.edu/fish/research

Name: Fernando Massuicci Ferreira
Age: 11
State or province: Sao Paulo
Country: Brazil

How many teeth does an adult shark have?

The number of teeth that a shark has is one of the primary features that scientists use to determine what species a particular shark is. Sharks may have literally hundreds of teeth. Each row of teeth has numerous smaller developing teeth behind the tooth that is in front and is currently in use. When a tooth falls out a new tooth moves into the space.

Name: Katherine
Age:
State or province: Victoria
Country: Australia

What is the shark that looks like a sting ray?

Several species of sharks have a rather "flattened" appearance that could, at first glance, be confused with rays. But the group which is most similar to rays is angel sharks. Angel sharks have a body shape that is very similar to the rays, although they are true sharks. True sharks have gill slits on the sides of their body, whereas the rays have gill slits on their underside.

Name: Fredda Anderson
Age: 18
State or province:
Country: Sweden

Is it true that all sharks must swim all the time?

Most sharks may spend almost their entire life span swimming in order to breath. But studies have shown that many sharks, such as the lemon, nurse and bull sharks, are able to lie motionless on the bottom for extended periods of time. They breath by actively moving their mouths to pump oxygenated water over their gills.

Name: Klaus Weinelt
Age: 13
State or province: Texas
Country: USA

What is a great white shark's average life span and average birth weight?

Some sharks may live to be about a hundred years old, but the average life span of the white sharks seems likely to be about 25 to 30 years. The appropriate scientific method of determining a shark's age is still debated even among shark scientists. All efforts to keep a white shark in captivity have failed after a very short time. White sharks are probably born when they are about 100 to 110 centimeters (39.4 to 43.34 inches) in length.

Name: James
Age: 11
State or province: Florida
Country: USA

Do sharks really roll their eyes back when they are attacking?

Sharks do not actually roll their eyes back when they attack. They sometimes seem to close their eyes because they have a unique "nictitating membrane" which they sometimes close because it affords protection to their eye.

Name: Diego Mersom
Age: 14
State or province: Brasil
Country: Brasil

Were there any sharks in one of the Mesozoic Ages?

Sharks were around before the great dinosoars roamed the earth. Very large sharks, such as the (hopefully extinct) giant relative of the great white shark, Carcharodon megalodon, were around at the same time as the dinosoars.

Name: Jonathan Santala
Age: 7
State or province: Michigan
Country: USA

Do sharks ever blink?

Sharks, like many other animals, need to keep their eyes clear. Some sharks have a "nicitating membrane" that they use to keep their eyes clear - much like humans use their eyelids.

Name: Hilda Torres
Age: 11
State or province: California
Country: USA

What are sharks favorite food?

Sharks eat all sorts of things depending on what species one is talking about. Whale sharks, basking sharks and meglamouth sharks feed on small shrimp-like creatures while others, such as the great white, eat all sorts of aquatic mammals and other fish-even other smaller sharks. Tiger sharks have even been known to eat rolls of tar and metal automobile license plates. Some small sharks, such as catsharks, are known to eat mollusks (many resemble seashells) and crustaceans (like crabs).

Name: Diego Mersom
Age: 14
State or province: Brasil
Country: Brasil

What is the size of the biggest shark?

The biggest shark, and in fact the biggest fish in the sea, is the whale shark. The whale shark is the largest but other large sharks are the basking and meglamouth sharks. Surprisingly all three of these huge sharks are filter feeders. Like the great whales they feed on very small shrimp-like creatures.

Name: Catherine and Rachel Crosbie
Age: 10 and 7
State or province: Newfoundland
Country: Canada

What are the natural predators of sharks? Which species of shark are responsible for attacks on humans, in order of frequency?

Sharks generally only have other sharks and man as predators.

For the latest and most accurate answers to questions about shark attack you should refer to the International Shark Attack File website.

Name: Amanda and Monica
Age: 9
State or province: California
Country: USA

Where are sharks mainly found?

At least one or more species of sharks are found in every ocean of the world. In addition, bull sharks (Carcharhinus leucas) can be found in many river sytems throughout the world as well as in lake Nicaragua.

Name: Philip
Age: 8
State or province: New York
Country: USA

What kind of shark is the toughest? What species live off the oceans near New York?

It would be hard to decide which shark is the toughest, however it is probably safe to say that the Great White shark is the most feared.

Numerous species of sharks live off the coast of New York, including the magnificent Mako shark for which there is an active sportfishery.

Name: Yancey Hall
Age: 28
State or province: NC
Country: USA

Can sharks smell?

Sharks have a very keen sense of smell. They are able to smell prey from great distances. Their sense of smell is so acute that they are able to detect less than 1 part of blood in a million parts of seawater.