Related by context. Frequent words. (Click for all words.) 64 coral reefs 63 bleaching 62 algal blooms 58 corals 56 extinctions 56 reefs 56 mass extinctions 55 acidification 54 coral 54 algae blooms 53 ocean acidification 52 coral reef 52 Coral reefs 50 cyclones 50 El Niño 50 marine ecosystems 49 heatwaves 49 mass extinction 49 reef 49 tropical cyclones 49 coastal erosion 48 tropics 48 El Nino 48 algae bloom 48 upwelling 48 salinity 48 Great Barrier Reef 48 volcanism 47 sunburn 46 La Nina 46 ozone depletion 46 La Niña 46 overfishing 46 atmospheric carbon dioxide 46 hypoxia 46 biodiversity 46 WMO 45 volcanic eruptions 45 phytoplankton 45 toxic algae 45 marine ecosystem 45 tropical 45 inundation 44 strandings 44 Antarctic Peninsula 44 deforestation 44 Corals 44 tsunamis 44 Greenland ice 44 anthropogenic 43 tidal surges 43 Little Ice Age 43 jellyfish 43 seaweeds 43 mangrove forests 43 atmospheric CO2 43 Coral Triangle 42 marine mammals 42 volcanic activity 42 droughts 42 cyanobacteria 42 sea turtles 42 seagrass 42 NIWA 42 desertification 42 ultraviolet radiation 42 mangroves 42 glaciers 42 climatic 42 manatees 41 siltation 41 beach erosion 41 typhoons 41 seabirds 41 prolonged drought 41 water borne diseases 41 oceans 41 climate change 41 oceanic 41 sedimentation 41 polar regions 41 cetaceans 41 coastal wetlands 41 soil erosion 41 marine organisms 41 storm surges 40 La Nina weather 40 gamma ray burst 40 mortalities 40 ecosystems 40 dissolved oxygen 40 overfished 40 solar flares 40 tropical storms 40 outbreaks 40 melting glaciers 40 root rot 40 estuaries 40 atoll 40 Tsunamis 40 plankton