Complex sentence: The beaches have edible shellfish and molluscs accessible at low tide, including clams, cockles, mussels, razorfish, sea urchins, shrimp and scallops, and with local knowledge, the occasional lobster.
Split into simpler sentences: The beaches have edible shellfish and molluscs accessible at low tides. These include clams, cockles, mussels, razorfish, sea urchins, shrimp and scallops, and with local knowledge, the occasional lobster.