<http://schema.org/description>
"The oldest shark fossils date from more than 300 million years ago, before the dinosaurs. A few species have kept the same physical characteristics for more than 150 million years. How have they survived so well?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://animals.howstuffworks.com/fish/sharks/shark2.htm/printable>