Related by context. Frequent words. (Click for all words.) 49 upwellings 48 melting snowpack 48 redds 47 Algae blooms 47 equatorial waters 47 thermocline 47 shoreline 47 plankton blooms 47 mudflat 47 intertidal zone 46 rocky shoreline 46 harmful algae blooms 46 gyres 46 coastal estuaries 46 shorelines 46 deplete oxygen 46 phytoplankton blooms 45 rugged cliffs 45 tidal marsh 45 equatorial Pacific Ocean 45 rocky shorelines 45 toxic algae blooms 45 toxic benzene 45 sediment 45 Petit Bois Island 45 oxbows 45 Budd Inlet 45 sandbars 45 clathrates 45 inter tidal 44 Sediments 44 seabeds 44 glacial melt 44 silty 44 cordgrass 44 coulees 44 intertidal 44 Stellwagen Bank 44 salmon fry 44 Wissahickon Creek 44 Warming temperatures 44 lake 44 receding glaciers 44 tules 44 Turnagain Arm 44 Lake Vostok 44 oil sheens 44 shallow bays 44 tidal marshes 44 freshwater ponds 44 tidal waters 44 Carquinez Strait 44 Conowingo Dam 44 forested wetlands 44 Cattaraugus Creek 44 Beluga whales 44 melting glacier 44 sediments 44 eelgrass beds 43 Atchafalaya rivers 43 tidal pools 43 eel grass 43 shallow reefs 43 algae bloom 43 hardened lava 43 freshwater marsh 43 Pend Oreille River 43 coral formations 43 Three Gorges reservoir 43 migratory shorebirds 43 rocky reefs 43 sand dredged 43 Sea otters 43 rocky ledges 43 undersea volcanoes 43 ice jams 43 Ocmulgee River 43 tributary streams 43 mud flats 43 floes 43 inlet 43 creeks rivers 43 Hanford Reach 43 northward migration 42 Cobscook Bay 42 Migrating birds 42 Altamaha River 42 sandy shore 42 Naches River 42 Admiralty Inlet 42 Three Gorges Reservoir 42 Minnehaha Creek 42 beaver pond 42 Aleutian chain 42 coastal bluffs 42 coastal marshes 42 polar craters 42 Northerly winds 42 nesting seabirds 42 warmer wetter 42 decaying vegetation