Beachcombing at Low Tide: When to Go and What to Look For
Every tide rearranges the beach, and every storm restocks it. Beachcombing is mostly about showing up at the right moment — a low tide soon after rough weather beats a calm summer afternoon every time.
Walk on a falling tide
Head out an hour or two before low tide and walk as the water retreats. A lower tide exposes more beach, and freshly uncovered sand hasn't been picked over yet.
Use TideTime's Beachcombing preset to list daytime tides under about 3 feet for your beach. You don't need an extreme minus tide — any decent low works — but the big lows around new and full moons expose sandbars and gravel beds that stay underwater the rest of the month.
Go after a storm
Storm waves churn the seabed and strip sand off the beach, dropping heavier things — shells, sea glass, agates, driftwood — in newly exposed gravel and along the high-water line. The first calm low tides after a blow are the best combing of the season.
That's also why winter usually beats summer: storms rework the beach all season, and in many places pull sand offshore entirely, exposing the gravel and bedrock where the durable finds concentrate.
Read the beach
Start with the wrack line — the ribbon of kelp and debris left by the last high tide. It traps shells, sea beans, and smaller finds, and it's where the beach's recent history is written.
Then check gravel patches and the mouths of creeks. Agate and sea-glass hunters work pebble beds, not open sand: heavier stones collect together where waves have winnowed the light material away.
What you can keep
Empty shells, beach glass, and driftwood are fine to pocket on most public beaches — but anything alive stays, including hermit crabs in borrowed shells and anything holding a resident.
Rules tighten in state parks, national seashores, and marine protected areas, where collecting anything may be prohibited — and a few states go further: Hawaii bans removing sand, rocks, or coral from any beach by state law, not just in parks. Human-made artifacts are protected almost everywhere. Fossils are more mixed: loose common finds like shark teeth are legal souvenirs on many beaches, but digging into cliffs or collecting in protected areas usually isn't. When in doubt, check the managing agency's rules — and take photos instead.
Stay safe
The best combing season is also sneaker-wave season. Never turn your back on the ocean, keep well clear of the water's edge on steep beaches, and never stand on or near beach logs in the surf zone — waves move them with crushing force.
Watch the clock around headlands and pocket beaches: a rising tide can cut off the route you walked in on. Note the time of low tide and start back as the water turns. And stay off soft mud and tidal flats near creek mouths — waterlogged sediment can trap a foot or leg, and people have drowned after getting stuck as the tide returned.