File:DavidWentzFossilizedSharkTooth.jpg

16-year-old david Wentz holds up a fossilized shark tooth he found while snorkeling off a beach near Marysville, Michigan.

The tooth is 3 1/2 inches long and is estimated to be 2 million years old.

AP Photo/Times Herald, Melissa Wawzysko, Copyright © 2008 The Associated Press. All rights reserved. Copyright © 2007 Yahoo All rights reserved.