green algae, alga, marine photosynthetic eukaryotic organisms, sea lettuce, ulva lactuca, lactuca, green nori, object

seaweed sea alga plant marine background green ocean salad nature leaf grass white reef underwater water isolated aquarium element drawn drawing wildlife tropical illustration deep aquatic laminaria aqua weed macro symbol set algae closeup chlorophyta photosynthetic eukaryotic organisms lettuce ulva lactuca nori object watercolor painted enteromorpha nutrient edible