The waters around hydrothermal vents may seem harsh and inhospitable to life, but in reality, these regions are oases that support rich and diverse ecosystems that make a living off the chemicals that flow from the seafloor. This video appears in WHOI's Ocean Science Discovery Center with the actual piece of hydrothermal vent chimney being collected by the human-occupied submersible Alvin beginning at 00:45.

For more on hydrothermal vents visit:
https://www.whoi.edu/know-your-ocean/...