Dear Prof O'Connor: Mr Andrews' MSc on the minor inverts deserves a wider audience. I for one would like to know more about these results. I have found a relationship between keelworm tubes and inedibly small patellids and high concentrations of mussel shells. Some south african sites have wide ranges of mussel sizes and barnacles when near the coast, but large mussels with low barnacle content when inland: if mussels were to be carried inland they were sorted and cleaned of encrustations at the coast, but if mussels were exploited at the coast cleaning and post-consumption waste was discarded in the same area.