There's not a chance anyone knew about them until submarine technology. You're projecting your knowledge onto obscure readings in your mythology book - you're looking for and creating awe.But they surely did understand about the springs (vents) of the great deep which was discovered in 1977?
If the Bible really possessed this knowledge, why didn't you Christians just tell the rest of us deep ocean vents harboring H2S breathing and heat tolerant bacteria, heat tolerant shrimp feeding on them, and mollusks feeding on the shrimp existed?
The thing is the Bible never predicts anything with any accuracy. It does not describe knowledge from our time. If it did you would be able to tell us what new discoveries the human race will be making in the future.
Don't worry - no Christian has every done this using the Bible. But plenty have anachronistically projected their modern experiences onto the ancient passages it contains.