[blam]

"And 80% of those live undeground or in the oceans."

Exactly.

[djf]

I remember how astounded I was a few years back when I read the report that they had found chemosynthetic bacteria in solid bedrock something like 25 hundred feet down.

I imagine that limit itself has been exceeded, next they will find chemosynthetic pyrophilic ones even deeper.

[djf]

A quick google tells me they have found sulphating bacteria at a depth of 3,500 metres in solid bedrock in Aspo, Sweden.