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https://www.noaa.gov/media/digital-library-photo/pl23expl1243jpgDescription
Galapagos 2005 Expedition. Hydrothermal vents expel large amounts of energyand chemicals that provide nourishments for chemosynthetic communities. Ahigher density of crabs, worms, anemones, microbes and fish can be seenon this patch of seafloor near a vent site than on the seafloor farther away. (Image credit: UCSB, Univ. S. Carolina, NOAA, WHOI.)