Live deep in earth

At depths of 0.8 miles down (1.3km), one thinks nothing could be alive down there.
But there are billions upon billions of bacteria, sometimes forming bright orange or white mats. Here are also tiny worms using appendages on its mouth to hoist itself along the rock.
This is Halicephalobus mephisto, the devil worm, on the prowl for microbes. Though miniscule (only as long as the width of several human hairs ).
The devil worm is the deepest-living animal. It's redefining life at its limits
Katarina Zimmer BBC30/07/2026
Gnostotheca 9592