Related by context. Frequent words. (Click for all words.) 69 coral reefs 68 coastal ecosystems 68 seagrass 67 corals 67 reefs 65 estuaries 64 mangroves 64 marine ecosystem 64 marine ecosystems 63 coral 63 ecosystems 60 mangrove forests 60 coastal wetlands 60 salt marshes 60 aquatic species 60 Coral reefs 59 biodiversity 59 estuarine 59 marine organisms 59 wetlands 58 habitat 57 coral reef 57 mangrove 57 habitats 57 species 57 invertebrates 57 reef 56 marsh 56 freshwater 56 coastal marshes 56 salt marsh 55 mangrove forest 55 plankton 55 marshes 54 vegetation 54 acidification 54 shorelines 54 estuary 54 biosphere 54 phytoplankton 54 shellfish beds 54 oceans 54 oyster beds 53 salinity 53 shoreline 53 wading birds 53 horseshoe crabs 52 ecosystem 52 mollusks 52 wildlife habitats 52 ocean acidification 52 shellfish 52 organisms 52 wetland 52 sea urchins 52 overfishing 51 grasses 51 carbon sinks 51 invasive species 51 dissolved oxygen 51 sea otters 51 ocean 51 sediment 51 algal 51 kelp 50 marshland 50 mangrove swamps 50 shorebirds 50 marsh grass 50 zooplankton 50 diatoms 50 tropical forests 50 mammals 50 mussels 50 migratory species 50 flora 50 wildlife habitat 49 algal blooms 49 ecological 49 coastal erosion 49 seaweeds 49 menhaden 49 sea creatures 49 overfished 49 amphibians 49 marine 49 larvae 48 lichens 48 krill 48 mud flats 48 finfish 48 coral bleaching 48 coastal waters 48 fauna 48 hydrilla 48 nesting birds 48 watersheds 48 seabirds 48 artificial reefs 48 soil erosion 48 sediments