beautiful seabed background with algae and gray stones, in blue-green and turquoise tones

pebbles branch ecosystem floral backdrop lights circle color abstract stone banner card ecology element drawing concept wild template plant world poster scene graphic shallow exotic panorama travel algae aqua aquarium aquatic art background beautiful blue bottom colorful deep design diving firefly flora gray green illustration landscape life light marine natural nature ocean paper point reef rest sea seabed seaweed space stones summer tropical turquoise under undersea underwater vacation vector wallpaper water wave white wildlife