ulva, cladophora green algae grow in laminar flow, low salinity black sea biotope aquascape, coquina stone rockpool

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 mollusc vegetation air bubble macrophyte algosociety photosynthesis oxygen synthesis selfpurification eutrophication ecology diving ukraine aquadesign ecosystem green algae grow laminar flow low salinity black sea biotope aquascape coquina rockpool snorkel surface wave reflection water storm weather