Cape Fear River (Wilmington NC)
The Cape Fear cuts Cretaceous Peedee Formation, Eocene Castle Hayne Limestone, and Miocene-Pliocene marine deposits before reaching Wilmington. Boat divers and kayakers find a wider age range of teeth here than anywhere else in NC — including occasional Cretaceous mosasaur and Squalicorax material.
Boat-based diving in the river and tributaries (Northeast Cape Fear, Black River). Surface-collect on tributary sandbars at low water. Snorkel limestone shelves where Castle Hayne is exposed.
Public ramps at Riverside Park (Wilmington), Castle Hayne, and Navassa. Castle Hayne quarries (Martin Marietta) are private — do not enter. Stay in public waterway and licensed dive sites.
Surface collection on the streambed is generally accepted. No quarry trespass. Dive collection of vertebrate fossils — defer to current NC Museum of Natural Sciences guidance for significant finds.
- Strong tidal current — Wilmington is at the head of a major estuary
- Heavy commercial shipping traffic near downtown
- Snags and submerged debris
- Alligators in upstream reaches
- The Northeast Cape Fear River around Castle Hayne is the productive Eocene reach
- Cretaceous teeth (small Squalicorax, mosasaur) wash out of Peedee exposures upstream
- Local clubs (NC Fossil Club Wilmington chapter) run guided floats — worth joining for one trip
Shark teeth findable here
Trophy = headline find · Rare = real score · Uncommon = some trips · Common = most trips.
Also findable here
The beachcomber's bonus round — what else the geology gives up.
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