Revealing the stunning landscapes of deep-sea hydrothermal vents

Some of the most stunning landscapes on Earth lie deep beneath the ocean’s surface. Volcanic activity on the seafloor creates scattered oases known as hydrothermal vents. These underwater geysers spew superheated water rich in dissolved minerals. When that scalding-hot water comes in contact with frigid deep-ocean water, the minerals crystallize, raining tiny flecks of “ash” to the seafloor. Those mineral deposits build up over time, creating breathtaking spires and “chimneys” that can grow to hundreds of feet tall. Less than 25 percent of the seafloor has been mapped at the same level of detail as the Moon or Mars. MBARI’s mission is to advance marine science and technology to understand our changing ocean—from the surface to the seafloor. For nearly four decades, MBARI has explored the deep ocean, recording thousands of hours of video with our remotely operated vehicles and mapping thousands of kilometers of seafloor using advanced robots. Together, these tools are helping to create a clearer picture