accumulations algae attached clinging coastline color colour covered ebb-and-flood ebb-and-flow filamentous green holdfasts layers levels light low-tide ocean pounding rocks rocky rough sea seashore seaside seaweed shadows shapes shore shoreline slimy slippery spray sticking stones stony stuck sunlight sunshine surf surge surging tidal tide tides velvety water waves wet beach coast ebb flow meander meandering nature ripples sand abstract backdrop background blended change changing colors colours currents ebb and flow foam foaming froth movement pull rippling salt-water surface texture textures troughs vast vibrancy vibrant wallpaper wavelets coastal dark deep expanse fluid liquid motion overcast powerful sailing solute Solvent sound view wind appearance dips dusk early evening reflection reflections salt water shades angles cruise-liner cruise-ship Indian-ocean