Related by context. Frequent words. (Click for all words.) 60 amoebas 59 flagella 58 flatworms 57 flagellum 56 unicellular 56 motile 55 nematode worms 55 rotifers 55 single celled organisms 55 planktonic 55 circadian clocks 55 amphipods 55 evolutionary origins 55 otolith 54 toadfish 54 protozoan 54 single celled organism 53 biological molecules 53 slime molds 53 stereocilia 53 amoebae 53 sea anemones 53 single celled 53 myoglobin 53 inchworm 52 nanomachines 52 stickleback 52 ribozyme 52 vertebrate animals 52 riboswitch 52 oscillatory 52 protozoa 52 damselfish 52 ribonucleic acid RNA 52 sensory organs 52 Caenorhabditis elegans 52 prokaryotes 52 chemotaxis 51 nanobubbles 51 organism 51 reproduce asexually 51 crocodilians 51 narwhals 51 soundwaves 51 blowholes 51 convergent evolution 51 primordial ooze 51 multicellular organisms 51 plesiosaurs 51 microscale 51 nonliving 51 organisms 51 mammalian 51 copepods 50 ganglion cells 50 bioluminescent 50 slime mold 50 Daphnia 50 toothed whales 50 microfluidic chip 50 humans 50 sticklebacks 50 biomimetic 50 electromagnetically 50 organelle 49 sea anemone 49 Hox genes 49 pterodactyls 49 methanogens 49 diatoms 49 microscopic 49 placental mammals 49 clathrates 49 olfactory receptors 49 tuning forks 49 mouthparts 49 platypuses 49 pectoral fins 49 locomotion 49 hydrodynamic 49 frogs 49 baleen whale 49 tadpole 49 Brownian motion 49 dinoflagellates 48 plasmon 48 Mammalian 48 mammalian brain 48 multicellular 48 marine invertebrates 48 creatures 48 tadpoles 48 diatom 48 hydrodynamics 48 nautilus 48 ribozymes 48 quantized 48 gut microbes 48 vocalisations 48 female reproductive tract 48 nanometer sized