SHELLS

32 pages

It is common to find shells washed up on the beach. Shells are the external skeleton of mollusks. These live in the coastal zone or up to several thousand kilometers for some species. There are 5 types of mollusks: Gastropods, Bivalves, Dentalia, Cephalopods and finally, Chitons. In this book only the first 3 are covered. You will discover no less than 74 shells that can be found on the Atlantic, English Channel and Mediterranean coasts.