what important discovery did researchers aboard the alvin make?

what important discovery did researchers aboard the alvin make?
Answer
Brief Explanations:
The Alvin is a deep - sea submersible. One of its important discoveries was hydrothermal vents on the ocean floor. These vents host unique ecosystems with organisms that rely on chemosynthesis instead of photosynthesis.
Answer:
Hydrothermal vents on the ocean floor