Related by context. Frequent words. (Click for all words.) 71 coral reefs 63 corals 60 marine ecosystems 60 reefs 58 coastal ecosystems 57 coral species 56 Corals 56 coral 56 marine organisms 55 ecosystems 55 ocean ecosystems 55 oceans 54 marine biodiversity 54 coral reef 53 mangrove forests 52 marine ecosystem 52 coral bleaching 51 mangroves 50 sea creatures 50 tropical forests 50 biodiversity 50 amphibian species 49 organisms 49 plankton 49 tropical rainforests 49 invertebrates 48 phytoplankton 48 mammals 48 aquatic ecosystems 48 Polar bears 48 coastal wetlands 47 Coral Triangle 47 estuaries 47 oyster reefs 47 coastlines 47 marine habitats 47 seaweeds 47 freshwater 47 biosphere 47 zooplankton 46 Natural disasters 46 species 46 habitats 46 freshwater lakes 46 eelgrass 45 Amphibians 45 lichens 45 mammal species 45 seagrass 45 estuarine 45 mass extinctions 45 tropics 45 oceanic 45 ocean acidification 45 aquatic species 45 mangrove forest 45 reef 44 seabirds 44 shorelines 44 fauna 44 biologically diverse 44 glaciers 44 fragile ecosystems 44 amphibians 44 ocean 44 diatoms 44 acidification 44 Global warming 44 microorganisms 44 microbes 44 carbon sinks 44 rainforests 44 Invasive species 44 Fossil fuels 43 mass extinction 43 Glaciers 43 Overfishing 43 marine mammals 43 micro organisms 42 flora 42 storm surges 42 anemones 42 jellyfish 42 sea urchins 42 aquatic organisms 42 marine 42 freshwater fish 42 tropical 42 wading birds 41 creatures 41 pollinators 41 bleaching 41 cyclones 41 hydrothermal vents 41 coconut palms 41 bird species 41 tropical forest 41 crustaceans 41 floods droughts 41 ecosystem 41 frog species