waxy substance secreted by the sperm whale and found floating at sea or washed ashore; used in perfume

waxy substance secreted by the sperm whale and found floating at sea or washed ashore; used in perfume

prolific South American aquatic weed having grasslike leaves and short spikes of white flowers; clogs waterways with dense floating masses

prolific South American aquatic weed having grasslike leaves and short spikes of white flowers; clogs waterways with dense floating masses