abstract background cracks crannies greenery growth hollows limestone moss nooks pitted rock rough sprouting surface textures vegetation angles appearance beach coast coastline color colour heavy layers levels ocean rocks rocky sand sea seashore seaside seaweed shade shadows shapes shore shoreline Sizes solid stones stony strength strong surfaces surfacing texture textured uneven variations variety grained grainy holes sandy caves cliff coastal coastal-landforms formations landscape outcrop sedimentary-rock sharp sky weathered blue sunlight sunshine wave light seagull surge surging swirl swirling tidal tides waves shrubbery shrubs