bruce simpson got his kids hooked from a young age. >> it is so cool to see them get excited about somethingy find. one of the things i always tell the kids when they find something -- it's 15 million years old, it's been sitting there for all of that time and you are the first person to pick it up and hold it. >> the took their find to the curator of paleontology at the calvert marine museum. >> he said it was a good specimen. >> he said it is one million years old. so every inch of tooth equals 10 feet of shock. it has 5 inches. so it would have been a 50 foot shark. he said it was the find of a lifetime. >> i tell peopl repeatedly, you shouldn't expect to find a fossil like that because there are people who have spent a lifetime and have not found a large tooth like that. she just happened to be in the right place at the right time. >> millions of yearsgo, this area was underwater. time and erosion have left fossils behind for amateur paleontologists to discover. >> you would think that after 200 years of western culture collecting fossils that we would know everything there is to know ab