internal shell of spirula.

animal animals beach beaches biodiversity biosphere canary cephalopod cephalopods coast coastal coastline coasts cofete colors colours decapod decapods fauna fuerteventura grain grains horn internal invertebrate invertebrates islands jandia little marine maritime mollusc mollusca molluscs mollusk mollusks natural particle particles post rams remain remains sand sandy seashell seashells shell shells shore shoreline spain species spirula squid squids taillight wild wildlife