Yep. I like CSI, really do. However, when they deal with subjects that I happen to know a lot about I catch them just making crap up. Say, most everything they do regarding firearms.
I actually enjoyed the show, as cheesy as the technical correctness of it was. Why? Because it's something new & different for a change. I'm sick of remakes. Recent years, most new movies have either been a big screen redo of a TV show, or a remake of a movie that's already been done at least once, maybe more times.
So now we get a show that is not another crime drama, not another medical gizmo like ER, Chicago Hope & such. It's not a 4th spinoff of CSI. It's not the stretching of some reality show to be another reality show. It's not a retread sitcom.
It isn't even science fiction, it's fantasy. The story isn't in the diving, nor the sub, nor the depth gauge/depth finder/radar/sonar
& such. The story is about the emergence of these critters & what that means & what happens. It has potential to be fun. But not if you get so wrapped up with what's worng with the things you know about that you focus on details & fail to simply enjoy the story being told.