Why seashells are getting harder to find on the seashore

At the beach, take only pictures, leave only footprints and sandcastles. The mollusks have enough problems already.

The Lost Sock : SeaShells by the SeaShore

Dromgoole: A great new book on seashells on Texas' shores

What causes these holes in seashells? - Australian Geographic

How are seashells made? - Woods Hole Oceanographic Institution

A Beachcomber's Guide to Shells and other Wildlife Found on the Seashore - Marine Dimensions

When is the Best Time to Find Seashells in Florida? Shelling Tips

A Beachcomber's Guide to Shells and other Wildlife Found on the Seashore - Marine Dimensions

19 Best Tips For Finding Seashells - The Trippy Life

Seashell - Wikipedia

Seashells by MillhillIdentifying Pieces of Seashells Found on the Beach