Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: Tubeworms deep in the Galapagos Rift get their energy from chemosynthetic bacteria. Tubeworms have no mouth, eyes, or stomach. Their survival depends on a symbiotic relationship with the billions of bacteria that live inside them. These bacteria convert the chemicals that shoot out of the hydrothermal vents into food for the worm. Answer: chemosynthetic
A:
Tubeworms deep in the galapagos rift get their energy from what type of bacteria?