Related by context. Frequent words. (Click for all words.) 57 sea lampreys 56 lampreys 56 Rotenone 54 gobies 54 fish 54 freshwater mussels 54 Eurasian milfoil 53 deplete oxygen 53 salties 52 copepods 52 aquatic organisms 52 cohos 52 Hydrilla 52 eelgrass 52 Sperm whales 52 lamprey 51 Algae blooms 51 aquatic weeds 51 native brook trout 51 aquatic creatures 51 Sea otters 51 migrating salmon 51 Midges 50 fishies 50 rotenone 50 eel grass 50 anadromous fish 50 organisms 50 phytoplankton blooms 50 aquatic insects 50 adelgids 50 Milfoil 50 Invasive plants 50 Coho salmon 49 redds 49 Killer whales 49 filter feeders 49 Menhaden 49 burbot 49 mussels 49 toxic algae blooms 49 estuaries 49 freshwater marshes 49 spawning beds 49 Didymo 49 Gypsy moths 49 sea squirts 49 brine shrimp 49 intertidal zone 49 blueback herring 49 mayflies 49 mainstem 49 fathead minnows 49 otters 49 salvinia 49 Zebra mussels 49 bass crappie 48 geoducks 48 tributary streams 48 sea lamprey 48 dissolved oxygen levels 48 Migrating birds 48 toxicant 48 bullheads 48 kokanee salmon 48 beaver ponds 48 brookies 48 sturgeons 48 zebra mussels 48 aquatic species 48 eels 48 Giant squid 48 alewives 48 Phragmites 48 ash borers 48 freshwater ponds 48 Dunkard Creek 48 alewife 48 mussel species 48 pogies 48 microscopic algae 48 stoneflies 48 kelp beds 48 spawning habitat 48 Willapa Bay 47 crabs 47 tidal rivers 47 invasive mussels 47 quolls 47 hydrothermal vent 47 underwater grasses 47 gillnets 47 mayfly 47 larval stage 47 larvae 47 northern snakehead 47 milfoil 47 round gobies 47 aquatic vegetation 47 invertebrates 47 landlocked salmon