Think about how you’ll use the shells and match the size to the task. Product pages list measurements (often in inches or millimeters), so use those to narrow it down.

• Jewelry & small accents: Mini shells (about 5–12 mm or 0.2–0.5 in) and tiny mixes work well.
• Vase fillers & table decor: Small to medium mixes (about 0.5–2.7 in) add texture without overwhelming the space.
• DIY crafts & beach-themed decor: Variety packs (roughly 1–3 in) give you a nice mix of shapes and sizes.
• Painting, ring dishes, or statement pieces: Larger scallop or oyster shells (around 3–6 in) offer a bigger surface.

When in doubt, choose a mixed assortment and order a bit extra to cover breakage or design changes.

1. Sort and inspect: Set aside any broken or very sharp pieces you don’t plan to use.
2. Rinse gently: Use lukewarm water and a small amount of mild dish soap. A soft brush (like a toothbrush) can help remove sand.
3. Rinse again: Thoroughly rinse with clean water to remove soap residue.
4. Air-dry completely: Lay shells on a towel until they’re fully dry, inside and out.
5. Optional finishing: For a subtle sheen or to prep for paint, you can apply a clear craft sealer or lightly scuff glossy areas with fine sandpaper. Test on one shell first.

Avoid harsh chemicals or prolonged soaking that could dull the surface. Prep methods can vary by shell type, so go gently and adjust as needed.

Some items are listed for fish tank decor, and many customers use shells as accents. To help protect your setup, consider the following:

• Check the listing: Look for mentions of aquarium or fish tank decor in the item description.
• Rinse thoroughly: Wash shells under running water to remove dust and debris before placing them in the tank.
• Choose thoughtfully: Smooth, uncoated shells are often preferred. If you’re concerned about dyes or finishes, pick natural, undyed options.
• Start small: Introduce a few pieces and observe your tank over time.

Every aquarium is different. If you’re unsure about compatibility, consult your aquarium guide or a pet care professional for advice tailored to your setup.

1. Pick your spot: Mark where you want the hole, staying a few millimeters from the edge to reduce cracking.
2. Stabilize the shell: Place it on a soft, non-slip surface and tape it down to prevent movement.
3. Use the right tool: A hand drill or rotary tool with a small bit works. Apply light, steady pressure.
4. Go slow: Drill at a low speed. Some crafters lightly mist or rest the shell on a damp sponge to help manage dust.
5. Safety first: Wear eye protection and test on a spare shell to dial in your technique.

If you prefer to skip drilling, look for shells or discs that come pre-holed in the item description.

You’ll find a mix on the page. Many sets feature natural seashells in assorted sizes and shapes, while some options include dyed crushed shells, polished varieties, or discs with pre-made holes for crafts. Product titles and descriptions usually specify the finish.

• Natural: Expect variations in color, size, and pattern—each shell is unique.
• Dyed or crushed: Useful for color-themed projects, vase fillers, and mosaic-style crafts.
• Polished or selected: Often chosen for a smoother, more uniform look.

Photos are representative, and slight differences are normal. For a specific look, check the item details and reviews, and consider ordering a little extra for matching and selection.