A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or o… 詳細

When the word "seashells" refers only to the shells of marine mollusks, then studying seashells is part of conchology. Conchologists or serious collectors who have a scientific bias are in general careful not to disturb livi… 詳細

Seashells are commonly found in beach drift, which is natural detritus deposited along strandlines on beaches by the waves and the tides. Shells are very often washed up onto a beach empty and clean, the animal having alr… 詳細