seaweed and algae cover a sandy beach, creating a vibrant, textured natural scene under sunlight

brown algae algology thickets algal flora algosociety kelp forest reef coastline scuba wave seaweed underwater shoreline beach sand ecology seascape marine life shells beautiful biodiversity shore nature sea coast edible environment tropical pacific alga green coastal plant background ocean water natural tide landscape aquatic seashell collection costal seashore outdoor beachside serenade