Hydrothermal vents, driven by volcanism along tectonic plate boundaries, are short-lived openings in the seafloor that spew super-heated, chemical-rich fluids into the ocean. Often composed of dramatic chimney spires, hydrothermal vents are important habitat in the deep ocean, supporting chemosynthetic communities that can include shrimp, tubeworms, crabs, fish, and more. https://oceanexplorer.noaa.gov/news/exploration-extras/24-national-ocean-month/welcome.html#chemosynthetic | NOAA Ocean Explo