How to Use a Floating Sifter for Shark Tooth Hunting

If you've ever walked away from a beach with sore knees and empty pockets, you know the struggle. Bending, scooping, squinting — and still missing most of the shark teeth hiding in the shell hash. A floating sifter fixes all of that. Here's exactly how to use one to find more shark teeth on every single hunt.

What Is a Floating Sifter?

A floating sifter is a sifting screen mounted inside a buoyant frame — usually made from PVC pipe and pool noodle floats — that rides on the water's surface while you work. Unlike a standard hand sifter you hold above the water, a floating sifter stays at the surface, letting you scoop large volumes of sand and shell hash, then let the water do the washing for you. The mesh screen retains shark teeth, fossils, shells, and sea glass while the fine sand rinses through.

Step 1: Find the Right Spot

Location matters more than technique. Shark teeth concentrate in specific zones — look for shell hash lines (the dark band of shell fragments left by receding waves), areas where the bottom changes from sand to gravel, and shallow troughs just past the breaking surf. In Florida, Venice Beach and the Peace River are legendary for good reason: both sit above fossil-rich deposits that constantly erode and resurface. Low tide is your best friend — it exposes more of the shell hash zone and concentrates fossils in a narrower band.

Step 2: Set Up Your Floating Sifter

Wade into knee-to-thigh-deep water and set the sifter on the surface. If your sifter came with a leash (like the coiled SUP leash in the Moonshark kits), clip it to your wrist or belt loop so you're not chasing it in the current. The sifter should float level — if one side dips, your pool noodles may need adjustment. A well-built floating sifter like the Moonshark rides flat and stable even in light chop.

Step 3: The Scoop-and-Swirl Technique

This is where the magic happens. Use your hand, a mesh shovel, or a small scoop to load the sifter screen with sand and shell hash from the bottom. Don't overfill — a few inches of material at a time is ideal. Then use a side-to-side swirling motion to let the water rinse through the mesh. Sand and silt wash away fast. What stays behind is the good stuff: shark teeth, fossilized bone fragments, shells, and occasionally a piece of sea glass.

Pro tip: a gentle rocking motion works better than aggressive shaking. You want to keep the finer shell hash moving while giving teeth time to settle toward the center of the screen where they're easiest to spot.

Step 4: Read the Screen

Once the sand rinses through, scan what's left on the mesh. Shark teeth have a few telltale characteristics that separate them from shell fragments: they're dark (black, gray, or brown from fossilization), triangular or tapered, and have a smooth enamel face on one side. Larger teeth are obvious. Smaller ones — especially baby Makos and sand tigers — can be tricky. Look for the shine of enamel catching the light. A waterproof ID card (included in Moonshark kits) is useful for quick field comparisons when you're not sure what you're looking at.

Step 5: Work a Grid Pattern

Don't just sift randomly in one spot. Once you've worked an area, move laterally along the shell hash line. Shark teeth distribute in bands, not isolated pockets — if you find one, there are almost always more within a few feet. Work a slow grid pattern along the most productive band, scooping fresh material each time. Most experienced hunters find that slow and methodical beats frantic and scattered every time.

Using a Floating Sifter in a River

River hunting — especially the Peace River in Florida — is some of the most productive fossil hunting in the world. The technique is slightly different from ocean hunting. Look for gravel bars and exposed fossil-rich gravel on the riverbed. Scoop gravel directly into your floating sifter and let the current help with the rinsing. River fossils are often better preserved than beach teeth because they haven't been tumbled by surf. Megalodon teeth, horse teeth, and mastodon fragments all show up regularly in Florida rivers.

What Floating Sifter Should You Use?

Not all floating sifters are built the same. Cheap plastic sifters crack under load, sink when overfilled, and fall apart after a season of saltwater use. A well-built floating sifter — like the handbuilt Moonshark sifters made from schedule-40 PVC pipe, galvanized wire mesh, and closed-cell pool noodle floats — is designed to handle real hunting conditions. The 11" x 11" mesh screen area is large enough for serious scooping, and the PVC frame won't rust or warp even after years of ocean and river use.

Whether you're hunting Venice Beach, Caspersen Beach, the Peace River, or any other Florida fossil spot, the right floating sifter makes the difference between a good day and a great one. Shop our handbuilt floating sifter kits at moonsharksifters.com — the Basic Kit, Epic Kit, and Just The Sifter ship free to anywhere in the US.