1. Great white sharks are the largest meat eating fish alive today, but there were sharks that may have been 3 times bigger.

2. Before there were dinosaurs, there were sharks.

3. Their bodies and behaviors have changed very little over time.

4. Scientists say the extinct Carcharodon megaloden had teeth 6 inches long.

1. Sharks live in the oceans of the world , usually in warmer waters.

2. All year sharks can be found near the equator.

3. Most sharks can survive only in salt water ,but there are few species that exist in both salt and fresh water.

1. Most sharks are born alive.

2. They emerge from their mothers fully formed and ready to hunt.

3. Sharks are completely independent at birth.

4. The eggs often have strings on them ,which anchor them to seaweed or coral to keep them from floating away with the current.

1. Nearly all sharks are carnivores.

2. Over the years license plates ,musical instruments, even bottles of wine were found in sharks.

3. No shark has teeth made for chewing.

4. Sharks will try to eat nearly anything.

1. People kill over a million sharks.

2. But while some species are threatened , most are not.

3. Still, it is smart to remember that people can be far more dangerous to sharks than sharks are to people.

1. Sharks can hear sounds 3.000 feet away.

2. Even in murky water or near darkness, a shark can locate prey.

3. Some sharks species are powerful enough to bite through steel.