In the Abyss.
Spoiler
I've found a passage that is blocked by a thing that requires a pearl to be energized to open the barrier. I've also found a whale. I'm assuming there is something relevant to the whale, but it just sits there.
I've found two glowing objects in a hidden room above the whale, with two weird looking fish staring at them, but I can't get the glowing objects out of the room.
Any hints or help?
Thanks,
ML