For beachgoers, the best place to find shark teeth in Charleston is along the waterline (also referred to as the “trash line”) with the outgoing tide. As the tide goes out, the waves push shells, pebbles, and fossils here, and they stay here until either the tide comes back in or someone picks them up. On flat beaches like Folly and Kiawah, you can look in the sand below the waterline (on the ocean side) as well.