- There is said to be more than 400 species of sharks.
- Sharks are said to share a class with rays and skates.
- They are said to have from 5 to 15 rows of teeth in each jaw.
- It's estimated that sharks' teeth fall out after only a week.
- There is said to be a single species that grows to a length of 12 feet.
- It's believed that whale sharks can live for more than a 100 years.
- There had been 118 shark attacks reported in 2011.
- The danger is considered to be exaggerated the experts say.
- Only 10 shark are considered dangerous to humans.
- Humans are considered a greater threat to sharks than vice versa.
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