The Great White Shark (Dragged from Under #2)

After the events in The Bull Shark, Barn and his mother travel to Maine to spend some time with a friend of hers. As luck would have it, there was just a shark attack on a beach very near where Barn is staying. A boy was killed while surfing, and while Barn knows how sad this is (his father was killed in Afghanistan), he also wants to find out why a shark was in the area. After observing, he realizes that the seal population is very healthy, so sharks are making their way to the area to feed. Surf boards can look like animals, and once a human is accidentally bitten, the blood sets off the shark and tragedies can occur. Sharks don't find humans to be that desirable as food. When Barn sees some other teens surfing even though there are signs up, he calls the police, who caution the boys and don't get them into trouble at all. The leader, Vince, has had run ins with the law before and vows to make Barn "pay" for calling them. Barn's mentor from Florida, Jessup, is in the area for a conference, and Barn's mother wants to know if it is okay for them to date. Barn's friends, Finn and Margaret, are also in the area doing college visits with a cousin. Scientists tag the sharks in order to study them, and the beach is carefully watched during the summer, but Barn almost comes to grief when a run in with Vince and his gang causes him to disregard his own good advice.