Last July, I was combing Omaha Beach in Normandy at low tide, my $80 entry-level metal detector beeping so nonstop I was convinced I'd wasted my money. I'd already dug 14 holes in 45 minutes, pulling out nothing but soda tabs, rusted bottle caps, and a single 2010 euro cent, when I swung my coil over a soft patch of sand 6 inches from the dune line. The beep was low, deep, and consistent---nothing like the high-pitched whine of aluminum foil. I dug a small plug with my sand scoop, flipped it over, and pulled out a tarnished 1944 US Army infantry button, still stamped with partial 1st Infantry Division markings. I've hunted for relics for 5 years, but that moment---holding a piece of history that had sat buried in the sand since D-Day, untouched for 80 years---still gives me chills.
That find didn't happen by accident. I'd wasted 3 prior trips to the same beach digging up junk because I was using all-purpose detector settings for inland fields, swinging my coil wrong, and hunting at high tide when all the good stuff was under water. Whether you're targeting sunken silver dollars from 19th century coastal shipwrecks or WWII relics left behind on former landing beaches, beach metal detecting is one of the most rewarding, accessible hobbies out there---if you know how to adjust your approach to the unique conditions of the shore. Below are the actionable tips that took me from digging 15 junk holes a day to pulling 3-4 meaningful relics per trip, no $1000 high-end gear required.
First: Ditch the All-Purpose Gear for Beach-Specific Basics
You don't need a fancy detector to find great finds, but the one you use for inland fields or park hunts will almost always fail on the beach, thanks to saltwater mineralization in the sand that causes constant false beeps. If you're just starting out, prioritize these 4 non-negotiable items over a high-end model:
- A detector with manual ground balance adjustment: Automatic ground balance works fine for dry, low-mineral inland soil, but wet beach sand has wildly varying salt content that will drown out signals from small, deep targets like sunken coins or tiny WWII buttons. Manual balance lets you tune out the sand's mineral noise so you only pick up actual metal objects.
- A waterproof search coil: If you want to find sunken coins buried in the shallow surf zone, a waterproof coil is non-negotiable. Even if you don't plan to wade, a waterproof coil holds up better to sand, saltwater, and accidental drops in the surf.
- A sand scoop instead of a metal trowel: Loose beach sand collapses back into holes as fast as you dig it, and a plastic or metal sand scoop lets you dig and sift for targets in 2 seconds flat, instead of 10 minutes with a trowel. It also minimizes beach erosion, since you're not digging huge, deep holes that damage dune grass root systems.
- Waterproof headphones: The built-in speaker on most detectors can't compete with surf noise, and you'll miss faint, high-pitched beeps from small, deep targets like tiny silver coins or corroded WWII dog tags if you can't hear them clearly.
Time Your Trips to Uncover Buried History
90% of new detectorists waste time hunting at high tide, when the most valuable relics and sunken coins are buried under 1-3 feet of water and sand. To maximize your finds:
- Hunt during low tide, ideally a negative low tide (when the tide is lower than the average low tide for that location). This exposes the "coin line": a hard-packed sand layer just below the surface where heavy metal objects like coins, bullets, and buckles settle over time, instead of getting shifted deeper by rising tides. Sunken coins from shipwrecks almost always accumulate in this layer, along with small WWII relics lost by soldiers landing on beaches.
- Hit the beach within 24 hours of a coastal storm. High winds and heavy surf churn up the top 1-2 feet of sand, unearthing relics that have been buried for decades. I found a 1943 British sterling silver coin on a beach in southern England two days after a nor'easter, sitting right on top of the sand with no digging required.
- Go early in the morning, before crowds arrive. Not only will you have the beach to yourself, but cool overnight temperatures firm up the sand, making it easier to dig shallow targets without your hole collapsing. You'll also avoid the crowds that often gather to watch detectorists, which can lead to unwanted questions or even people trying to claim your finds.
Master On-Site Technique to Cut Junk Finds in Half
Even with the right gear, bad technique will leave you digging up pull tabs and bottle caps all day. These small adjustments will help you find more sunken coins and WWII relics, faster:
- Swing your coil correctly: Most beginners swing the coil side to side like a pendulum, but the right motion is a smooth, overlapping arc, where you lift the front edge of the coil slightly off the sand as you move forward. This ensures you don't miss small targets buried right at the surface, like a sunken coin half-buried in the wrack line.
- Learn to read your detector's tones: Most entry-level detectors use 3 distinct tones: a high-pitched beep for low-metal objects (pull tabs, aluminum foil, modern zinc pennies), a mid-tone for mid-metal objects (bottle caps, larger modern coins, copper items), and a low, deep beep for high-metal objects (silver, gold, iron relics like WWII bullets, buckles, and buttons). If you're targeting sunken coins or WWII relics, ignore 90% of high-pitched beeps---only dig mid and low tones, and you'll cut your junk finds by nearly 70% immediately.
- Adjust your sensitivity carefully: Turn your sensitivity up just high enough that it consistently beeps on a small test coin you buried 6 inches deep before your trip, but not so high that it picks up mineralization in the sand and beeps nonstop. Too high sensitivity = hundreds of false beeps, too low = you'll miss small, deep relics.
- Dig a plug, not a hole: Cut a semi-circle in the sand with your scoop, flip it over to expose your target, then fill the plug back in when you're done. This minimizes beach erosion, avoids leaving big ugly holes that other beachgoers complain about, and makes it easier to retrieve targets in loose, wet sand.
Tell Real Relics Apart From Junk (And Stay Safe)
Not every low, deep beep is a rare find, and not every old-looking item is a WWII relic. Here's how to tell the difference:
- For sunken coins: Look for patina (green or brown corrosion) rather than shiny, unmarked metal---most modern coins are shiny and have clear dates, while sunken coins from the 1800s or earlier will be heavily corroded, with worn or unreadable dates. Clusters of coins in one small area are almost always from a shipwreck: ships carried coins from multiple countries for trade, so a group of mixed, similarly aged coins is a sure sign you've hit a wreck site.
- For WWII relics: Look for military markings: stamped regimental numbers on buttons, "US" or "UK" stamps on canteens, crimped casings on bullets, or partial markings on dog tags. Clusters of small metal items in one spot are often a soldier's lost personal kit---they'd often lose buttons, coins, and small trinkets all at once when moving through combat zones, so a cluster is a good sign you've found something meaningful.
- Critical safety rule: If you hit a hard, metallic object that looks like live ammunition or unexploded ordnance (UXO), stop digging immediately, mark the spot from a safe distance, and call local authorities. UXO from WWII is still unstable and dangerous even 80 years after the war ended---never try to move or dig up a suspicious object on your own.
Follow Ethical Rules to Protect History (And Avoid Legal Trouble)
Beach relic hunting comes with extra responsibility, especially when you're targeting historical items like WWII artifacts or shipwreck coins:
- Check local laws before you go: Metal detecting is banned on most protected national seashores, wildlife refuges, and beaches with known historical sites in the US and Europe. In many countries, removing WWII relics or shipwreck artifacts from public beaches without a permit is illegal, and can lead to heavy fines or even criminal charges.
- Don't dig up large historical finds on your own: If you find a cluster of WWII relics, a shipwreck anchor, or a large cache of old coins, stop digging, note the exact GPS location, and report it to local historical authorities instead of removing everything. These finds are often part of a larger protected site, and removing them erases critical context for historians.
- Leave the beach better than you found it: Fill in all your holes, take all your trash (and any junk you dig up) with you, and don't remove natural items like shells or driftwood just because they trigger your detector.
The Real Reward Isn't the Find---It's the Story
Last month, I was hunting a quiet, unmarked stretch of beach on Cape Cod after a small storm, ignored a dozen high-pitched beeps from pull tabs, and dug a mid-tone signal 8 inches deep. I pulled out a tarnished 1692 Spanish silver coin, probably from a colonial-era ship that sank off the New England coast. It's only worth about $20 on the collector's market, but holding a piece of history that's been buried in the sand for 300 years, that traveled across the Atlantic before the US even existed, is a feeling you can't get anywhere else.
You don't need fancy gear, or hours of experience, to find sunken coins or WWII relics on the beach. You just need to adjust your settings to the sand, hunt at the right time, and respect both the beach ecosystem and the history you're looking for. The next time you're at the shore, skip the sandcastle bucket for an hour, swing a coil over the low-tide line, and see what's been waiting under the surface for decades.