Related by context. Frequent words. (Click for all words.) 53 icecaps 53 permafrost thaws 52 plankton blooms 51 volcanic lava 50 seabeds 50 glaciers melt 47 saline aquifers 47 tidal pools 47 deplete oxygen 47 absorbs carbon dioxide 47 stinging jellyfish 47 river deltas 46 Sand dunes 46 fishies 46 hydrologic cycle 46 pteropods 46 Melting glaciers 46 ocean 46 oceans 45 microscopic bugs 45 decomposers 45 seawater 45 coral polyps 45 Coral reef 45 volcanically 45 delicate ecosystems 44 befouling 44 subtropical climate 44 melting icecaps 44 wonderlands 44 earthquakes volcanoes 44 upwellings 44 Seafloor 44 sea 44 toxic algal blooms 44 sargassum 44 frozen wasteland 44 recharge groundwater 44 desalinization plants 44 disappearing glaciers 43 ecosphere 43 hydrological cycle 43 freshwater habitats 43 ice melts 43 erupting volcanoes 43 creeks rivers 43 wetland ecosystem 43 acidify 43 water 43 protoplasm 43 tropical jungles 43 turbid water 43 everglades 43 amphipods 43 subglacial 43 Katrinas 43 biosphere 42 decaying vegetation 42 quaggas 42 Beluga whales 42 blowholes 42 Oceanographers 42 Andean glaciers 42 gyres 42 cypress forest 42 phytoplankton blooms 42 waterscape 42 penguin colonies 42 Gulping 42 abyssal 42 peat lands 42 unspoiled wilderness 42 potent greenhouse gas 42 equatorial waters 42 Coral bleaching 42 saltwater 42 freshwater ecosystems 42 Algae blooms 42 salvinia 42 temperate rainforest 42 melting glacier 42 wetland ecosystems 41 tsunamis earthquakes 41 freshwaters 41 pristine coral reefs 41 clathrates 41 gastropods 41 polar icecaps 41 egg hatches 41 swamps 41 Acidification 41 sea serpents 41 Yo ho ho 41 bilge pumps 41 meteorological phenomena 41 barren landscapes 41 brackish waters 41 Sea otters 41 methane hydrates 41 watery depths 41 glacial melt