background beach coast dry foreshore pebble pebbles stones water wet coastal coastline kelp ocean rocks rugged sea trees usa waterside bank England estuary Great Britain green Hampshire landscape low Mud mudflat river soft sticky swampy tide Bristol Channel ebb marine nature Penarth pier seaside tidal uk boat dinghy estuarine fitful grass maritime mast mood moody pole storm stormy sunlight transport weather yacht yachting bankmast clustered crowded harbour marina packed post path pathway track birds currents distance distant dune-grass dunes enjoyment foreground hot island islands light outdoors outside perspectives public recreation relaxation relaxing sand sandy seashore small summer sun sunshine tides tourists vegetation view views visitors warm waves