Armeria bird blue cliff coastline flowers Great Britain gull herring gull hillside island natural nature Pembrokeshire pink rocky sea seagull shore Skomer spring summer thrift united kingdom view wales welsh wild anchorage bay bluebells boat campion cloud green harbour Hyacinthoides shelter Silene sky yacht ancient exercise footpath historical menhir old path rock standing stone track trail travel Trek walk water admire couple elderly enjoy gaze hat Look nostalgia pair panorama relax reminisce rest sit together two white wistful coastal lichen plant background eroded erosion layers sedimentary texture Balanus barnacles covered speckled