algae and stones underwater. sun rays through water

fish shoal shark nature underwater wildlife algae saltwater seaweed green stones seascape flora marine sea selfpurification water riparian vegetation oxygen synthesis ecology macrophytes photosynthesis undersea alga thickets algal algobiota algology algosociety black palisada thuyoides wild chondria obtusa chondrophycus crimea europe coastline krimea deep beautiful coral background plantae dive aqua aquatic tide surface singlecelled landscape sun rays through underwater water