Hunting Deep Time in Charleston Harbor: The Shark Teeth & Fossil Island Adventure Boat Tour

The tide slides out like a slow exhale, peeling back the edge of a Lowcountry sandbar and revealing a scatter of black triangles that wink in the sun. The boat idles, gulls circle with gossip, and a bottlenose dolphin cuts a silver arc across the channel as if to say, keep up. You swing down to the beach and the marsh greets you with the peppery smell of pluff mud and salt. The current keeps nudging, the day keeps opening, and for the next three hours you’ll court deep time—combing a tiny barrier island for the teeth of sharks that ruled these waters millions of years before church steeples stitched the Charleston skyline.