* Sea shells are formed in the ocean: They are the hard, protective outer coverings of marine creatures like snails, clams, and oysters.
* Mountains are formed by different processes: Mountains are usually formed by tectonic plate collisions, volcanic activity, or erosion.
While there might be rare instances where a shell could be carried a very short distance uphill by a strong wave or storm, you won't find large deposits of sea shells on mountain peaks.
