Jin was in the middle of the western ocean, trying to find where the vault was located. The ocean was massive just in surface area, so being underwater was even worse when it came to looking for something.
He used his mana to look for anything that was abnormal, but there were tons of things at the bottom of the ocean that were not supposed to be there naturally. Even Jess had some difficulties finding what they were looking for.
This didn't even take into account the large trenches in the ocean that went even deeper than the ocean floor. And at that point, everything was pitch black, but Jin could still see perfectly fine.
However, the fish were pretty creepy, especially the ones that had powers. Even marine life this deep in the ocean was affected by the same thing that gave women powers.
