Related by context. Frequent words. (Click for all words.) 68 zooxanthellae 67 microscopic algae 66 unicellular 65 Cyanobacteria 65 diatoms 65 phytoplankton blooms 64 planktonic 64 single celled 64 dinoflagellates 64 foraminifera 63 multicellular 63 microscopic organisms 63 diatom 63 sea anemones 62 isotope ratios 62 tunicates 62 organisms 61 morphologically 61 vacuoles 61 filamentous 61 microenvironments 61 marine organisms 61 cyanobacteria 61 micelles 61 waxy substance 61 microorganisms 61 prokaryotes 61 copepods 60 alga 60 plankton blooms 60 marine invertebrates 60 snail shells 60 single celled organisms 60 organic molecules 60 Amino acids 59 nanosized 59 atmospheric nitrogen 59 sea squirts 59 microbes 59 microorganism 58 symbionts 58 chloroplasts 58 pollen grains 58 SWNTs 58 organism 58 cordgrass 58 Caenorhabditis elegans 58 nacre 58 tiny crustaceans 58 Gamma rays 58 bacteria fungi 58 electrically conducting 58 phosphorescence 58 biological molecules 58 setae 58 organic acids 58 vertebrate animals 58 carbonic acid 58 Phytoplankton 58 rhodopsin 58 stromatolites 58 biogenic 58 amyloid fibrils 58 terrestrial ecosystems 58 Geobacter 57 phytoplankton 57 deplete oxygen 57 Earthlike 57 oxygen isotopes 57 manganese oxide 57 multicellular organisms 57 myoglobin 57 terpenes 57 hollow tubes 57 bacterial spores 57 zooplankton 57 nonliving 57 methanogens 57 upwellings 57 chitin 57 nematode worms 57 nitrogen fixing 57 naturally occurring substance 57 Microorganisms 57 radioactive decay 57 micro organisms 57 lectins 57 iridescence 57 single celled organism 57 castor bean plant 57 bacterial colonies 57 mycobacteria 57 gut microbes 57 Ultraviolet light 57 mycelium 56 motile 56 protozoa 56 Quantum dots 56 fluorescent probes 56 porphyrins 56 erythrocytes