Seashells are the hard outer coverings of marine creatures like snails, mussels, and clams. These unique objects can be found in various shapes, sizes, and colors, making them a popular collectible item among beachgoers. Nevertheless, if you're looking to enhance your vocabulary, there are several alternatives to the word "seashells" that can be used. Some of these synonyms include "marine shells," "beach shells," "oceanic shells," "coastal shells," and "seaside shells." Each of these options provides an alternate way to describe the precious items found on the seashore, allowing for a varied and fresh writing style.