Related by context. Frequent words. (Click for all words.) 60 fragile marshlands 59 coastal marshlands 58 Bottom trawling 58 delicate ecosystems 57 unlined pits 57 Louisiana marshlands 57 coastal estuaries 56 saltwater marshes 55 marshes 55 polluted groundwater 55 freshwater marshes 55 coastland 55 inland bays 54 deplete oxygen 54 freshwater habitats 54 freshwater estuary 54 delicate marshes 54 By Laurie Kulikowski 53 coastal wetlands 53 groundwater aquifer 53 oily sludge 53 groundwater depletion 53 bd.className + = 53 overflowing reservoirs 52 Tidal waves 52 toxic benzene 52 undersea pipelines 52 Vast stretches 52 beaches wildlife refuges 52 Deepwater Horizon wellhead 52 fragile ecology 52 Radiation leaks 52 toxic algal blooms 52 wetlands 52 saltwater marsh 52 contaminate drinking 52 Songhua river 51 toxic residues 51 By Ben Geman 51 By Laurelle Gilbert 51 wetland vegetation 51 shorelines 51 By NATHAN BRUTTELL 51 pristine coral reefs 51 oyster beds 51 By Brad Kadrich 51 dredged sediment 51 inhaled ingested 51 4M gallons 51 By HARVEY SIMPSON 51 wetland ecosystem 51 Ike steamed 51 sonar dome 51 corroded pipelines 51 Exxon Valdez supertanker 50 peat swamps 50 check Shoddy disposal 50 St. Lucie Estuary 50 scatter radioactive 50 seagrasses 50 waterways 50 riparian habitats 50 By TheStreet Wire 50 DeLisle Miss. 50 freshwater marsh 50 estuaries 50 Toxic chemicals 50 Septic tanks 50 polluting waterways 50 Radioactive waste 50 Radiation leaking 50 corrosive fluids 50 seagrass meadows 50 groundwater aquifers 50 Typhoon Damrey 50 streambanks 50 salt marshes 50 freshwater springs 50 Soil erosion 50 oil sheens 50 tidal marsh 50 % #F# 6v.jsn 50 wetland ecosystems 50 marshland 50 red sludge 50 pipeline ruptures 50 diked 50 sewage effluent 50 ecologically fragile 50 shallow aquifer 50 Winds howled 50 Swollen rivers 50 creeks rivers 50 Citrus greening 50 polluted rivers 50 polluting groundwater 50 corroded pipeline 50 toxic sediments 50 salination 50 intermittent streams 50 Dense smoke