bay beach cliffs coastline Cornish cornwall cove England english Great Britain hill low tide natural nature ocean river sand sandy sea sheltered shore water waves Anthyllis Armeria blue cliff flora flowers headland kidney vetch landscape pink spring thrift wild yellow bench inlet relax rest rocks seat sit surf tide view wooden cloud electricity energy Europoort holland Land lot natural environment Natural landscape Netherlands north sea power Rotterdam sky sunny wind farm wind turbine windmill break crash pound rock hillside seethe seething flow incoming racing island Pembrokeshire rocky Skomer summer united kingdom wales welsh