All but the starfish are gathered on the beaches of my bay. The shadowbox is shown here open because the glass interferes with the photograph otherwise.
Sea glass, quahog/clam shells, pebbles, a mermaid's purse, mermaid toenails, scallops, periwinkles, cockles, a whelk/conch, a hag stone top right, mussels, slipper shells, others, bits I liked the colors, shapes or textures of.
Beach combing is so Zen. So is arranging the shells.