Live just south of there, in Beaufort SC. We find them more on the beaches/ sand bars on the rivers. Beaches are good but not as many. Small ones, under an inch. If you can get to some sand pits that's 30 feet down, that's where the megladons (?) are found. Friend at the Garbage Dump finds hundreds, can't get me in though. Can try treading the upper deltas of rivers but wrong time of year. Between the sharks and water snakes, the alligators use salt/ brackish water to get leaches off. About 60 feet down is an ancient coral reef, and our aquifer runs under the limestone it has become.
Other than that we only have seashells, sand/ clay, and civil war bullets laying around here in the Low Country! Need to go to northern part of state for the really good stuff like gemstones and gold.
K