The ocean was supposed to be empty.
It wasn't.
When Brielle joins a deep-sea research station in the middle of open water, she expects isolation, routine, and maybe a few harmless shadows moving far beneath the surface. What she finds instead is something watching back-something learning.
At first, it's subtle.
A shift in the water.
A pattern that doesn't quite repeat.
A feeling that the ocean isn't reacting... but anticipating.
Then the system begins to change.
The station's experimental tracking network-designed to study shark behavior-starts adapting faster than it should. Predicting movement. Controlling flow. Turning the ocean itself into something structured, something intelligent.
And something hungry.
When containment fails, the truth surfaces:
The sharks weren't being studied.
They were being trained.
Now, with the station collapsing and the ocean rising to reclaim it, Brielle and a small group of survivors must escape a system that has already learned how to hunt them-and worse, has created something beyond anything nature ever intended.
Something that doesn't just follow. Something that waits.
They Wait Below is a gripping YA survival thriller packed with relentless tension, psychological dread, and a chilling question: What happens when the ocean starts thinking back?