Interesting premise, but it seems it was written with no research. There were just too many errors, things that were obviously wrong and unbelievable. There were things the characters excepted as fact that they had no way of knowing.
I love sci-fi, horror, etc., where you have to except some things, but something about this was too unbelievable. I just can't explain exactly what.
I thought the "scientific" conceit was somewhat interesting. The creature featured was thought provoking. The humans on the other hand were annoying characitures whose relationships were painfully ill-conceived, superficial, shallow [ironic!], and nauseatingly predictable. If this book were written about junior high kids it would play. These are supposed to be intelligent accomplished adults.
This would not be so bad, except that the humans and their goings on are focused on quite a bit in the book and play an integral part in moving the plot forward--so they can't be skipped over or ignored, sadly.
For me the end was worst of all...I don't want to be a spoiler...I was just left very cold by the attitude of the characters who do survive toward the ones who don't [ who, as presented, were slightly superior humans at that].
They seem to think "oh well those other folks died horrible gruesome deaths, but heck! we survived, so lets become smug and judgmental, get rich, get married, and have a big party!" Ouch. Who is the callous cold predator again...? I think I'd rather be eaten.