plant; water clean; eutrophicated pond; surface water; small lake; completely grow; overgrow; water hidden; carpet; floating watermoss; salvinia adnata; invasive plant; thickness; village; environmental disaster; ecological catastrophe; ecological disaster; environmental catastrophe; weed; quarantine weed; excessive growth; polypodiphyta; fern; quarantine weed cleans eutrophicated pond. surface of small lake completely hidden by carpet of floating watermoss salvinia adnata; polypodiphyta. thickness of cover reaches half of meter. in background is village; kerala; india: Bilder zum Thema plant; water clean; eutrophicated pond; surface water; small lake; completely grow; overgrow; water hidden; carpet; floating watermoss; salvinia adnata; invasive plant; thickness; village; environmental disaster; ecological catastrophe; ecological disaster; environmental catastrophe; weed; quarantine weed; excessive growth; polypodiphyta; fern; quarantine weed cleans eutrophicated pond. surface of small lake completely hidden by carpet of floating watermoss salvinia adnata; polypodiphyta. thickness of cover reaches half of meter. in background is village; kerala; india bei ClipDealer