ulva, cladophora green algae in laminar flow, low salinity nutrient rich black sea biotope, breaking wave supralittoral zone

enteromorpha intestinales cladophora sericea albida ulva intestinalis rigida ceramium aquatic bottom coast shallow underwater landscape environment flora thicket marine odesa rock salt saltwater ocean brackish seaweed submerged summertime travel wildlife swim exploration space shell gravel sand turquoise mussel vegetation air bubble macrophyte algosociety photosynthesis oxygen synthesis selfpurification eutrophication ecology diving ukraine aquadesign ecosystem snorkel green algae laminar flow low salinity nutrient rich black sea biotope breaking wave rockpool shrimp palaemon elegans camouflage water