Fiction titles about the horrors of the unknown of the deep sea?

Just got finished watching a video called ‘Fear of Big things Underwater’ by Jacob Geller and it’s essentially about humanities simultaneous obsession and fear of what sort of creatures are in the sea. Things we barely even know exist.

And was just curious if anyone knew any fiction books that could maybe give me the same sense of ‘dread’ and fun mystery.

Thank you very much if you take the time to respond.

by Emblem-Lover