Shelling in Delaware with Kids: A Beach Explorer Guide (+ Free Map)

Delaware may be the second smallest state in America — but its coastline packs a remarkable variety of shelling experiences into a surprisingly compact geography.

Make memories with your kids exploring the beaches of Delaware.  Seashells of Delaware Activity Book will help you track your family discovers.

Best Beaches for Shelling in Delaware

We mapped the best shelling beaches in Delaware so you can plan your adventure before you go.

1. Cape Henlopen State Park, Lewes — One of the finest state park beaches on the mid-Atlantic coast — sitting at the geographic junction where the Delaware Bay meets the Atlantic Ocean. This unique position means shells from two very different bodies of water accumulate on its beaches. The Great Dune — one of the tallest dunes on the mid-Atlantic coast — rises above the beach and gives families spectacular views of both the bay and the ocean. Channel Whelks, Knobbed Whelks, Moon Snails, and Coquina Clams wash up on the ocean-facing beaches while the bay side delivers Quahogs, Jingle Shells, and Periwinkle Snails. The World War II observation towers still standing in the park add a fascinating historical dimension to any visit.

2. Beach Plum Island Nature Preserve, Lewes — A small, beautiful natural preserve near Lewes with excellent shelling on its undeveloped shoreline. The preserve's protected status means shells accumulate relatively undisturbed. Jingle Shells, Quahogs, and Slipper Shells are all regularly found here in the calmer bay-influenced waters. One of Delaware's most accessible but least-visited shelling destinations.

3. Broadkill Beach, Milton — A quiet, largely undiscovered bay-side beach on the Delaware Bay with excellent shelling in its tidal flat areas at low tide. The calm bay waters support Quahogs, Slipper Shells, and Jingle Shells in the adjacent tidal areas. One of the finest and most peaceful bay-side shelling destinations in Delaware — particularly good for families who want an uncrowded, unhurried beach experience away from the resort towns.

4. Slaughter Beach, Milford — One of the most extraordinary natural beaches on the entire East Coast — a bay-side beach on the Delaware Bay that is the site of one of the most spectacular horseshoe crab spawning events in the world. Every May and June, hundreds of thousands of horseshoe crabs emerge from the bay at high tide to lay their eggs in the sand — and hundreds of thousands of shorebirds, including the Red Knot flying from Argentina to the Arctic, stop at Slaughter Beach to feast on the eggs. The beach is covered in horseshoe crab shells, egg cases, and the shells of the mollusks that share the bay. An extraordinary family nature destination unlike anything else in Delaware.

5. Prime Hook Beach, Milford — A beautiful bay-side beach adjacent to the Prime Hook National Wildlife Refuge with excellent shelling and outstanding wildlife viewing. The refuge's tidal marshes and bay shoreline support an exceptional variety of shells in the tidal flat areas. Quahogs, Jingle Shells, Periwinkle Snails, and Oyster Drills are all regularly found here. The adjacent wildlife refuge adds a birding dimension that makes Prime Hook one of the finest combined shelling and wildlife destinations in Delaware.

6. Fenwick Island State Park, Fenwick Island — Delaware's southernmost Atlantic beach — a beautiful barrier beach at the Maryland border with excellent shelling particularly after northeast storms. The park's position at the southern end of Delaware's Atlantic coast means it receives shells pushed north by coastal currents from Maryland's beaches. Channel Whelks, Knobbed Whelks, Moon Snails, and Coquina Clams are all regularly found here. The least crowded of Delaware's Atlantic resort beaches making it particularly good for undisturbed shelling.

7. Woodland Beach, Smyrna — A quiet bay-side beach in the upper Delaware Bay near Smyrna with excellent shelling in its tidal flat areas. The upper bay's calmer, less saline waters support Quahogs, Slipper Shells, and Jingle Shells in the adjacent tidal areas. One of Delaware's most off-the-beaten-path shelling destinations — families who discover it find an undisturbed bay-side experience far from the resort crowds of the lower shore.

8. South Bethany Beach, South Bethany — A quieter alternative to the busy Bethany Beach resort area — a residential beach community with good Atlantic-facing shelling particularly at the less-developed southern end near the Assawoman Canal. Channel Whelks, Moon Snails, and Coquina Clams are all regularly found here after northeast storms. The smaller crowds compared to Rehoboth and Bethany make undisturbed shell finds more common.

9. Rehoboth Beach, Rehoboth Beach — Delaware's most famous resort beach — and despite its popularity, the northern and southern ends away from the main boardwalk area offer decent shelling particularly after northeast storms. Channel Whelks, Atlantic Surf Clams, Coquina Clams, and Moon Snails all wash up on the ocean beach after strong onshore winds. Go early in the morning before summer crowds arrive for the best shelling conditions. The famous Rehoboth boardwalk and the excellent restaurants and shops in town make this the most complete resort experience on the Delaware coast.

10. Pickering Beach, Dover — A beautiful bay-side beach in the upper Delaware Bay near Dover — and one of the finest horseshoe crab spawning beaches in the state alongside Slaughter Beach. In May and June the beach is covered with spawning horseshoe crabs and their egg cases, and the shorebird spectacle is extraordinary. Outside spawning season, the beach offers good bay-side shelling with Quahogs, Slipper Shells, Jingle Shells, and Oyster Drills regularly found in the tidal flat areas.

For the full guided experience with shell illustrations, games, and a complete tracker, explore our Seashells of Delaware Activity Book.