Even if you're not going to the beach, you should read Steve Alten's first book about a giant shark this summer. The fifth book of Alten's series came out just last week, so it's time to start catching up. 
 Though MEG is similar to Jaws (giant shark goes on rampage) it is distinct and stands on its own. The novel is about Carcharodon megalodon, not the great white shark of Jaws fame. The premise is that extinct megalodons still exist. They live so deep in the Mariana Trench that nobody knows. They survive on the warmth of the thermal flows from the earth. The water above them is too cold for them to swim in, so they are confined to the basement of the sea until an accident happens that unleashes one of them to the surface. Mayhem ensues. 
 While the premise may sound far-fetched, each step toward the megalodon's surfacing is presented in a believable fashion. Even if somebody pooh-poohs the scientific plausibility of the anatomy and behavior of the meg, the idea of prehistoric mega-sharks among us is an imaginative and exhilarating concept. The meg is so big that it poses a threat to ships and whale pods. Its ability to destroy marine life and destabilize entire ecosystems of shallower waters is believable and scary. This sets up the rationale for extreme measures by humans to stop the meg. 
 Jonas is the expert in the middle of all the action. At first nobody believes him. Then they begin to believe him but don't see the threat as seriously as he takes it. Will they catch up to his way of thinking in time? 
 MEG is fast-paced and somewhat short (my copy has large font and generous spacing but still falls under 300 pages). The action, like the location of the meg swimming across the Pacific, keeps moving so there's no threat of getting bored. MEG is also satisfying because bad things happen to characters who are jerks. 
 The imaginative premise, high-octane plot, and characters you'll enjoy rooting for or against earn this book five stars.