A Pennsylvania family made a rare prehistoric discovery while searching for shells on a South Jersey beach.
The Bower family found a fossilized megalodon tooth on the beach in Sea Isle City.
Scientists estimate the tooth is more than 3.5 million years old and once belonged to a megalodon, an extinct species of giant shark that roamed the oceans millions of years ago.
Experts say megalodons may have grown to lengths of about 60 feet.
To put that into perspective, that's roughly the length of a standard bowling alley lane.