green bubble algae, underwater photo of this unique sea algae

photosynthetic green algae close aquatic plant ecosystem colorful sea pearl aquaria problem saltwater seawater undersea utricularis valonia ventricaria ventricosa coral aquarium reeftank fishtank tank reef bubble alga vesicles seaweed tropical water underwater color isolated exotic selective focus air bladders seaside demulcent herb growth detail washed nature unique macroscopic widespread algal species withstand low light fish invertebrate leaf animal food flower yellow organism wildlife produce