Before the discovery of these [underwater] vents, all life on Earth, the key to life on Earth, was believed to be the sun and photosynthesis. But down there, there is no sun, there is no photosynthesis; it's chemosynthetic environment down there driving it, and it's all so ephemeral.
![Before the discovery of these [underwater] vents, all life on Earth, the key to life on Earth, was believed to be the sun and photosynthesis. But down there, there is no sun, there is no photosynthesis; it's](http://cdn.myquotes.org/images/mike-degruy/before-the-discovery-of-these-underwater-vents-all-life-on-earth-the-key-to-life-on-earth-was-believed-to.jpg)