The rocky shore supports an entire community of organisms known as invertebrates. We've already met some of these "spine-less" animals, like the barnacle, periwinkle, and mussel. Invertebrates do not have a spine and many, but not all, have a hard exoskeleton or shell to provide body structure. The image above illustrates various parts from six different invertebrates. Can you identify any of these organisms? Let's meet some of these invertebrates and learn more about how they survive...