stones near the shore, overgrown with mytilaster mollusk and enteromorpha green algae in tiligul estuary, ukraine

alga algae thickets algal flora algobiota algology algosociety aquatic black sea ceramium cladophora ecological ecology enteromorpha environment europe eutrophication grass green macrophytes marine nature odessa bay oxidation oxygen water synthesis photosynthesis plant polisiphonia riparian vegetation saltwater seaside seaweed selfpurification ulva undersea world wild wildlife