Shell Island is a small island off the coast of BeachClan Territory. Only BeachClan cats can get there (of course) for the waters are much too rough for any other cat to swim. When you get there, there are many herbs that the Medicine Cat uses daily. This is very helpful since it is almost impossible for herbs to grow in sand. It is also the most romantic spot in BeachClan Territory. No wonder there are so many new kits in new leaf ; )