Related by context. Frequent words. (Click for all words.) 66 benthic 64 zooplankton 63 copepods 63 planktonic 62 intertidal 61 foraminifera 61 diatoms 61 seagrasses 61 marine organisms 61 marine sediments 60 intertidal zone 60 biota 60 plankton 59 terrestrial ecosystems 59 Phytoplankton 59 eel grass 59 phytoplankton 59 aquatic insects 59 sediments 58 organisms 58 deplete oxygen 58 bioaccumulation 58 microscopic algae 58 inter tidal 57 marine invertebrates 57 invertebrates 57 microscopic organisms 56 aquatic habitats 56 thermocline 56 hydrothermal vent 56 tidal marshes 56 seagrass beds 56 reefs 55 aquatic ecosystems 55 freshwater ecosystems 55 diatom 55 sediment 55 aquatic organisms 55 sea squirts 55 eelgrass 55 marine ecosystems 55 ocean ecosystems 55 freshwater ponds 55 aquatic ecosystem 55 Cyanobacteria 55 aquatic vegetation 55 Sediments 55 seabeds 55 freshwater mussels 55 mudflat 54 filter feeders 54 methanogens 54 alga 54 estuarine 54 seamounts 54 dissolved oxygen levels 54 microbes 54 trophic 54 tidal pools 54 volcanic vents 53 coastal estuaries 53 shallow bays 53 underwater grasses 53 kelp forests 53 gobies 53 corals 53 oceans 53 invertebrate species 53 otoliths 53 pectoral fins 53 harmful algal blooms 53 Daphnia 53 microorganisms 52 hydrothermal vents 52 sediment samples 52 micro organisms 52 ecosystems 52 dissolved oxygen 52 Lake Vostok 52 toothed whales 52 anoxic 52 sediment cores 52 mammals 52 tiny crustaceans 52 microorganism 52 sticklebacks 52 spawning beds 52 cyanobacteria 52 redds 52 isotopic composition 51 biogeochemical 51 headwater streams 51 nitrogen fixation 51 Algae blooms 51 baleen whales 51 bathymetry 51 protozoan 51 microfossils 51 kelp beds 51 atmospheric CO 51 coral reefs