beach coast coastline color colored colors colour coloured colours layers levels light low-tide ocean open-area rocks rocky rough sand sea seashore seaside shade shadows shapes shore shoreline Sizes spray stones stony sunlight sunshine surf surge surging tidal tides variety water waves wet adults children distance distant expanse families low tide open area pebbles people recreation relaxing strolling sunset tide waders wading walking builders' rubble dumped growing growth mangroves natural outcrop plants pollution receding tide rock formations rubble waste waterline aerial aerial roots dunes glistening glossy green greenery mangrove growth ocean edge ocean waterline receded receding root network Roots salt-resistant sand dunes scrub security strength strong support accumulations algae attached clinging covered ebb-and-flood ebb-and-flow filamentous holdfasts pounding seaweed slimy slippery sticking stuck velvety bare boulders chalk cliff destroyed destruction England erode erosion Great Britain kent landscape low nature nodules Remains remnants rock uncovered white worn blue boat boats bow cloud clouds coruna eu europe float frame galicia horizon horizontal horizontally line linear pope Portiño rope ropes saavem ship sky small solid Spain transportation