aquamarine background blue liquid marine pattern ripple Sardinia seawater sparkle sparkling summer sunlight texture water beach bright coast coastal fresh nature red rocks salt sea smell sunny canada coastline natural ocean rill sand shore streaming Vancouver Island wave bed blue water clear floor Maddalena Islands rock rocky sea bed transparent Brixham cold concrete fence flag Lido lifeguard outdoor pool railing Shoalstone swim swimming tidal aquarium colorful colourful corals fish fishes life reef saltwater sealife tank tropical underwater zoo break calm peaceful reflective relax shadows sun tranquillity warm color colour coral salt_water tang bay boat boats evening harbour island landscape moor moored motorboat motorboats seascape soft light