Suggest me fast paced Ocean thrillers

I have never read a book with such a premise, so I checked out a few books on Goodreads. The popular ones that I came across were: Into the Drowning Deep( I read a few pages and was completely bored by the amount of scientific description) and From Below by Darcy Coates. I have seen some mixed reviews on it and found it long too, like over 400 pages.

What I’m mostly looking for in underwater thrillers is that they are not too long (under 400 pages) and that they are fast-paced. I would love it if somebody could recommend something to me.