wave move torn algal mess after storm, green algae ulva, cladophora, bryopsis in low salinity black sea, littoral zone

cladophora sericea enteromorpha albida ulva intestinalis ceramium aquatic coast shallow underwater environment flora grow thicket biotope landscape marine flow odesa bottom stone rock coquina salt saltwater ocean seascape seaweed submerged summertime travel wildlife swim exploration space shell gravel sand turquoise vegetation macrophyte algosociety photosynthesis oxygen synthesis air bubble selfpurification eutrophication snorkel ukraine perspective dof