beach blue bright coast coastal fresh nature red rocks salt sea seawater smell summer sunny cave cavern cliff coastline Cornish cornwall England english Great Britain hole low tide natural rock sand shore break calm peaceful reflective relax shadows sun tranquillity warm centeás clouds deep horizon island layer layers line ocean peace quality saavem sky water eroded erosion rocky sedimentary strata tide worn abstract angles appearance background color colour cracks crannies heavy hollows levels limestone rough seashore seaside seaweed shade shapes shoreline Sizes solid stones stony strength strong surface surfaces surfacing texture textured textures uneven variations variety dry Malta bare barren bleak desert harsh Israel landscape plain sere terrain topography creature pink spikes spines urchin