In short, Schätzing work revolves around the question of whether in the vastness of the oceans might exist many more than we realize.
It begins with a strange aggressive behavior of the known marine species, sits down with unexplained phenomena continues in climate and other natural cycles, culminating in the shocking realization that intelligent planning behind it - humanity is on the verge of their extinction!
The only gripe provides the historical document itself: the actual voltage peak is reached after about half and then stretched by an unnecessarily long drawn and lovingly detailed Action orgy until the end of the radio play. Sometimes less is more - that would have been based on the Action a desirable motto. Who here has not been encountered in the book because the listening experience is an unclouded guaranteed. But even for those who have not read the book, this audio book is recommended as the positive impressions of the presentation and the fascination of the topic clearly prevail.