Related by context. Frequent words. (Click for all words.) 53 seabeds 49 coastal wetlands 48 coastal marshes 48 marshes 48 coastal estuaries 47 Deepwater Horizon wellhead 47 seagrass beds 47 seagrasses 47 sea squirts 46 marshland 46 eelgrass 46 nearshore waters 46 oyster reefs 45 estuaries 44 marsh 44 Hydrilla 44 creeks rivers 44 Willapa Bay 44 microscopic algae 44 Lionfish 44 freshwater ecosystems 44 kelp beds 44 spawning beds 44 oceans 43 coastal waters 43 ocean ecosystems 43 seabed 43 underwater grasses 43 Perdido Pass 43 inshore waters 42 tidal creeks 42 seafloor 42 salt marshes 42 mangrove swamps 42 shorelines 42 marsh grasses 42 freshwater 42 aquatic species 42 Barataria Bay 41 Louisiana marshes 41 tidal marsh 41 freshwater mussels 41 reefs 41 eel grass 41 sea 41 Whale sharks 41 filter feeders 41 lakes rivers 41 thermocline 41 wetland habitat 41 ocean 41 mollusks 41 headwater streams 41 plankton 41 river deltas 40 Arctic seabed 40 coral reef ecosystems 40 aquatic ecosystem 40 marine organisms 40 alga 40 freshwater lakes 40 wetlands 40 saltwater 40 Lake Okeechobee 40 deepest recesses 40 shoreline 40 Gulf 40 shrimp crabs 40 Shrimping 40 copepods 40 Laguna Madre 40 deeps 40 swamps 40 Matagorda Bay 39 aquatic vegetation 39 Ocean acidification 39 coral reef 39 reef 39 kelp forests 39 saltwater intrusion 39 oyster beds 39 Caspian Sea 39 waters 39 shallower depths 39 Barents Sea 39 Antarctic ozone 39 seawater 39 Aleutian chain 39 coral colonies 39 aquatic weeds 39 Suisun Marsh 38 coastlines 38 protective ozone layer 38 ecosystems 38 hydrilla 38 saltmarsh 38 salt marsh 38 ecologically fragile 38 tidal flats 38 inland waters 38 mangrove forests