Cute Young Brunette Girl Reveals On The Beach With A Seashell

Seashells have been admired, studied and used by humans for many different purposes throughout history and pre-history. But seashells are not the only kind of shells. In a variety of habitats it is possible to find shells from freshwater animals such as freshwater mussels and freshwater snails, and it is also possible to find shells from land snails.
Terminology
When the word "seashells" is used to refer 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 living populations and habitats: even though they may collect a few live animals, most responsible collectors do not often over-collect or otherwise disturb ecosystems.