"Boring."
I don't know how the other readers could consider this book "exciting." Let me sum up the book for you. There is a very large, very heavy meteorite that is going to be moved by ship. Moving something of that size and weight is complicated. They remind us of this fact in every sentence for the entirety of the story. Some people think moving the rock is a bad idea. Fast forward to the end and they actually try to move the meteorite and have more problems. A few people die because of the rock but that doesn't really add any excitement to the story. The End.
I just saved you a credit and many hours of your life that you will never get back. The publisher's summary makes the story sound more like a thriller than it actually is. If you decide that you DO want to hear the story, do yourself a favor and listen to it at 2x normal speed. The narrator is the slowest reader ever and makes everyone sound the exact same- imagine William Shatner's speech pattern if he was also dozing off. 2x puts it at about normal human speech pacing.
If you want an exciting read about a strange rock that also involves a lot of ocean, just read Sphere by Michael Crichton. Trust me.