Related by context. Frequent words. (Click for all words.) 62 hydrothermal vent 62 volcanoes 61 mud volcanoes 58 marine sediments 56 volcanic islands 56 volcanism 55 volcanic activity 55 volcanic 54 lava tubes 54 seamount 54 lavas 54 stromatolites 54 geologically active 54 marine invertebrates 53 hydrothermal vents 53 active volcanoes 52 volcanic vents 52 aerosol particles 52 subduction zones 52 sedimentary basins 52 oceanic crust 52 magmas 52 lithosphere 52 Kilauea Volcano 51 Eruptions 51 Anatahan 51 hydrothermal activity 51 ocean ridges 51 terrestrial ecosystems 50 igneous rocks 50 foraminifera 50 lava flows 50 Volcanic 50 Weddell Sea 50 crustal 50 landmasses 50 plate tectonics 50 volcanic gases 50 seamounts 50 middens 50 basaltic 50 biogeochemical 50 methane hydrates 49 volcanically active 49 intertidal 49 volcanic crater 49 explosive eruptions 49 microfossils 49 methane hydrate 49 ocean currents 49 planetary nebulae 49 earth crust 49 volcanic eruptions 49 Oceanographers 49 magma chamber 49 cryosphere 49 continental crust 48 volcanic peaks 48 magmatic 48 whale strandings 48 Saturn moons 48 biogeography 48 gyre 48 limestone caves 48 continental drift 48 Valles Marineris 48 basalts 48 Volcano erupts 48 Volcanic eruptions 48 volcanic tremors 48 Geochemistry 48 solar corona 48 planetesimals 48 ejecta 48 sediment cores 47 biodiversity hotspots 47 Earth crust 47 planktonic 47 marine reptiles 47 Galapagos Islands 47 Galapagos islands 47 meteoroids 47 Saturn moon Enceladus 47 El Niños 47 tectonics 47 volcano 47 coral atolls 47 Sunspots 47 volcanic plume 47 pyroclastic flow 47 Volcanology 47 Cosmic rays 47 steam vents 47 Cocos Island 47 microscopic organisms 47 abiotic 47 jumbo squid 47 landforms 47 caldera 47 seafloor 47 Archaea