2. Must sharks roll on their side to eat?

No, sharks attack their prey in whichever way is most convenient, and they can protrude their jaws to bite prey items in front of their snouts.

3. Do sharks continuously eat?

No, sharks eat periodically depending upon their metabolism and the availability of food. For example, juvenile lemon sharks eat less than 2% of their body weight per day.

4. Do sharks scavenge the sea?

No, Most sharks prefer to eat certain types of invertebrates, fish and other animals. Some sharks eat mainly fish. Others eat other sharks or marine mammals. Some sharks are even plankton-eaters.

5. Are whale sharks vicous predators?

No, whale sharks, which are the largest fish that ever lived, are plankton feeders like the great whales.

6. Is the great white shark a common and abundant species?

No, Great whites are relatively uncommon large predators that prefer cooler waters. In some parts of their range, great whites are close to being endangered.

7. Do sharks only live in salt water?

No, a specialized osmoregulatory system enables the bull shark to cope with dramatic changes in salinity -- from the freshwaters of some rivers to the highly saline waters of the ocean.

8. Do sharks always swim at highspeeds?

No, although some sharks may swim at bursts of over 20 knots (23 miles per hour), most sharks swim very slowly at cruising speeds of less than 5 knots (5.75 miles per hour).

9. Do sharks have peanut sized brains?

No, sharks' relatively large and complex brains are comparable in size to those of supposedly more advanced animals like mammals and birds. Sharks also can be trained.

10. Do sharks have to swim constantly?

No, some sharks can respire by pumping water over their gills through opening and closing their mouths while at rest on the bottom.

11. Do sharks have poor vision?

No, sharks' eyes, which are equipped to distinguish colors, employ a lens up to seven times as powerful as a human's, and some shark species can detect a light that is as much as ten times dimmer than the dimmest light the average person can see.

12. Are sharks hard to kill?

No, stress of capture weakens a shark, and so some sharks are easily killed in hook-and-line or net fishing.