I've been following the reviews for Piranha and the vast majority of them run positive.
This novel belongs to one of Cussler's recurring series, the Oregon Files.
Of all the Cussler series, I've found the Oregon Files to be the most uneven (with the Isaac Bell books being the strongest, overall.) But as I said, the reviews for Piranha run overwhelmingly upbeat.
As I've also written here before, no one's life was ever changed by a Clive Cussler novel. They don't explore controversial social issues. But they are fun.