A scientist discovers a new organism living deep beneath the earth surface this organism thrive despite intense pressure heat lack of water and sunlight this organism is probably a

The organism that can live deep beneath the earth surface despite intense pressure heat lack of water and sunlight might be Nematodes.

Explanation:

Nematodes are able to cope extreme heat or extreme cold and dehydration. They have adopted by learning technique that allows them to survive. They can transform into a hardy form called the dauer stage. They can survive harsh conditions for longer durations at this stage. And again awaken themselves when conditions are favourable again. They can be found in hot springs, deserts, high up mountains and in the deepest oceans.