Amelia Island is a decent shelling beach and a very good fossil shark tooth beach, and both rewards concentrate in the same two places for the same reason.
The principle: look where water moves
Shells and teeth do not accumulate evenly along thirteen miles of shoreline. They collect where currents converge, where a structure interrupts the longshore drift, and where an inlet dumps what it has been carrying.
On Amelia Island that means the two ends.
The north end: Fort Clinch jetties
The jetties at the mouth of Cumberland Sound, inside Fort Clinch State Park, are the island's best-known collecting spot. The jetty interrupts the drift and the sound flushes an enormous volume of water past it on every tide.
This is the place for fossil shark teeth. They are dark — black, grey or brown against pale sand — and mostly small. Look in the shell hash rather than on clean sand: the gravelly bands of broken shell are where the heavy material sorts itself.
You pay the state park entry fee to get here, which also buys you the fort and two beaches.
The south end: Amelia Island State Park
At the island's southern tip, Nassau Sound meets the Atlantic and the flats are broad and shell-strewn at low tide. It is undeveloped, there are no facilities, and it is a good birding beach at the same time.
The currents where the sound meets the ocean are strong — collect on the flats, do not swim at the inlet.
When to go
Low tide, always. Aim for the hour either side of it; the exposed flats and the swash line are where everything is. Today's low is on our beach conditions page.
After a blow. A day or two after a storm or a sustained onshore wind is dramatically better than a calm week, because the surf has been rearranging the bottom and putting new material up the beach.
Early. Not because shells care, but because other people do. On a good post-storm low tide the productive stretches get picked over by mid-morning.
Winter beats summer, on balance — more weather, fewer collectors.
What you will find
Whelks, moon snails, cockles, coquinas, olives, augers, arks, sand dollars, and a lot of broken shell. Whole large specimens are uncommon on a busy shoreline; the pleasure here is in volume and variety rather than trophy finds.
Fossil shark teeth, sharks' vertebrae fragments and occasional other fossil material at the jetties.
The rules that matter
Nothing alive. A shell with an animal in it stays on the beach, and that includes hermit crabs. Sand dollars and sea stars are alive when they are on the beach in one piece — put them back in the water.
Florida regulates the take of live shellfish and some species specifically. If it is moving, or if you are unsure whether it is occupied, leave it.
State park rules apply inside Fort Clinch and Amelia Island State Park, and collecting rules in state parks can be more restrictive than on city or county beaches. Check the park's own rules — we have not confirmed the current position.
Stay off the dune and out of marked turtle nests, roughly May through October.
What to bring
A mesh bag so sand and water drain out. Something to sit on if you are working the shell hash for teeth. Sun cover — there is no shade at either end of the island. And a tide table.