Five examples of seashells are printed in a booklet pane to show off that scientific and collecting interest. Shell collecting, usually confined to molluscan shells, is popular. Shells have been used for coins, ornaments, and tools because of their abundance, bright colors, and great variety in shape. Compared with such hobbies as coin and stamp collecting, shell collecting and identifying is much more recent in origin. Seashells are found in all oceans, from the shore to the deepest depths.