Related by context. Frequent words. (Click for all words.) 67 habitat degradation 66 overharvesting 66 overfishing 62 Overfishing 59 overexploitation 58 overhunting 55 environmental degradation 54 ocean acidification 54 habitat fragmentation 54 seagrasses 52 ocean ecosystems 51 coastal ecosystems 51 siltation 50 eutrophication 50 ecosystems 50 underwater grasses 50 freshwater ecosystems 50 biodiversity 50 ocean acidity 50 acidification 49 overfished 49 marine ecosystems 49 marine ecosystem 48 species extinctions 48 fisheries 48 frequent droughts 48 habitat 48 longline fishing 48 bee populations 47 habitats 47 fishing fleets 47 harmful algal blooms 47 salinity 47 predation 47 aquatic ecosystems 47 saltwater intrusion 47 overgrazing 47 coral reefs 47 freshwater 46 overexploited 46 nutrient pollution 46 ecological 46 coral reef ecosystems 46 marbled murrelet 46 terrestrial ecosystems 46 oyster reefs 46 coral bleaching 46 aquatic species 46 coastal erosion 46 deforestation 46 floods droughts 46 marine biodiversity 45 Coral reefs 45 salmon fisheries 45 coastal wetlands 45 Pacific walrus 45 nutrient runoff 45 marine ecology 45 estuaries 45 species 45 seagrass beds 45 Ocean acidification 45 bycatch 45 keystone species 45 freshwater mussels 44 reefs 44 marine habitats 44 Atlantic bluefin 44 endangered species 44 extinctions 44 eelgrass 44 Illegal logging 44 amphibian species 44 melting glaciers 44 AP Interview CG 44 polluted waterways 44 scanty rainfall 44 extinction 43 fragile ecosystems 43 Droughts 43 river deltas 43 desertification 43 aquatic habitat 43 ecologies 43 sea otters 43 polar bear populations 43 invasive species 43 oceans 43 lobster fishery 43 pollution 43 silting 43 polluted runoff 43 pesticide DDT 43 overcapacity 43 cod haddock 43 admiral asks 43 droughts 43 fishery 43 marine organisms 43 rapid urbanization 43 cod fishery