Many live in extreme environments, like hot springs or deep sea vents.

World's deepest sea vents reveal unknown creatures - in pictures (8 pictures)

Chemoautotrophs are mostly bacteria or archaea that live in hostile environments such as deep sea vents.

Strange worms and bugs living by deep sea vents survive on toxic chemicals that spew from openings in the sea floor.

Because the carbonates were near silicate minerals and clays hydrothermal systems like the deep sea vents on Earth may have been present.

Most are bacteria or archaea that live in hostile environments such as deep sea vents and are the primary producers in such ecosystems.

He proposed that the earliest life on Earth began in deep sea vents.

Black smokers or deep sea vents are an example of this kind of volcanic activity.

They are the result of deposits formed when geothermally heated water is emitted from deep sea hydrothermal vents known as "black smokers".

Microbes survive in some amazing places, like in hot water springs, or around deep sea vents.