Add Yahoo as a preferred source to see more of our stories on Google. A woman discovered a rare shark tooth in Florida, offering a glimpse into prehistoric times. Nichole Mercuri, 26, was walking ...

You've probably come home from the beach with a collection of pretty rocks and shells at some point. If you're lucky, you might find one that's a rare color or particularly shiny. The sea can throw up ...

A woman discovered a rare shark tooth in Florida, offering a glimpse into prehistoric times. Nichole Mercuri, 26, was walking along a Florida beach when she says she spotted a giant tooth that once ...