Related by context. Frequent words. (Click for all words.) 66 acidification 59 marine ecosystems 56 overfishing 56 atmospheric carbon dioxide 56 Greenland ice 54 marine ecosystem 54 climate change 54 oceans 54 global warming 53 extinctions 53 biodiversity 53 coral reefs 52 marine organisms 50 coastal erosion 50 salinity 50 ecosystems 50 mass extinction 50 melting glaciers 50 reefs 49 anthropogenic 49 Global warming 49 corals 49 Antarctic Peninsula 48 Antarctic ice 48 Global Warming 48 phytoplankton 46 plankton 46 marine mammals 45 desertification 45 polar ice 45 glaciers 45 Climate Change IPCC 44 dissolved oxygen 44 hypoxia 44 krill 44 sedimentation 44 NOAA 44 NOAA Fisheries 44 polar regions 44 Climate Change 43 cyanobacteria 43 oceanography 43 geoengineering 43 UNEP 43 estuaries 43 species 43 oceanographer 43 algae blooms 43 Oceanography 42 deforestation 42 melting ice 42 Scripps Institution 42 invasive species 42 ocean currents 42 sea otters 42 biosphere 42 fisheries 42 ocean 42 ozone layer 42 oceanic 42 Oceans 42 coastal wetlands 41 NMFS 41 whales 41 acidity 41 depletion 41 freshwater 41 Arctic 41 IPCC 41 Antarctic 41 overfished 41 bleaching 41 Geophysical Research 41 tropical cyclones 41 Himalayan glaciers 41 invertebrates 41 El Niño 41 reef 41 polar bears 41 Antarctica 41 Arctic Ocean 40 Environment Programme UNEP 40 La Nina 40 permafrost 40 mammals 40 British Antarctic Survey 40 seabirds 40 atmospheric 40 bycatch 40 coral reef 40 oceanographic 40 environmental degradation 40 beach erosion 40 antibiotic resistance 40 Environment Programme 40 carbon sequestration 40 greenhouse gasses 40 climatologists 39 porpoises 39 coral 39 El Nino