Shelling on Marco Island.
Sanibel gets the shelling reputation. Marco quietly has some of the best beaches on the Gulf for it — if you know when, where, and what to skip.
Go at low tide. Ideally at dawn.
The shellbanks reveal themselves on the outgoing tide — check a tide chart, aim for the hour before low. Dawn beats sunset because the tourists are still asleep and the fresh haul hasn't been picked over.
The best beaches for it
- Sand Dollar Spit (Tigertail Lagoon, low tide) — wade across to the wild outer beach. Locals' favorite.
- South Beach south end — walk past the last condo. Fewer people, more shells.
- Keewaydin Island — boat access only. The best shelling near Marco, full stop. Charter a drop‑off with Naples Luxury Boat Tours.
What's legal to keep
Empty shells: yes. Living shells: no. If there's a critter inside — even a hermit crab — it goes back. Florida law, and it's enforced. Sand dollars and starfish are nearly always alive when you find them; leave them.
What you'll find
Lightning whelks, fighting conchs, lettered olives, Florida cones, lace murex, sand dollars (rare and only at the right tide), and the occasional junonia if you're luckier than us.