The cockle shell is probably the most commonly found shell along Florida beaches. Even at Daytona and New Smyrna beaches, where there are far fewer shells than along the gulf coast, we almost always found one of these.
Cockle Shells
They can range in size and I have a couple that are quite large, but the ones I chose to collect stood out as unique due to their coloring or pitted appearance (such as the one I call the “footprint shell”).
I especially love my blue ones, but the ones shown here have a white inside that looks like it was painted.
White inside
thanks this helped me