"When a two-ton animal takes a taste of you, it doesn't do much good to apologize." - Peter Benchley

25 miles from where customers casually sip cappucinos and lattes in Ghirardelli Square, amid the noisy commerce of Fisherman's Wharf, a 400-million year old predator hunts.

The Devil's Teeth is a gripping and voraciously readable piece of work that looks at the Great White Sharks (Carcharodon carcharias) of the Farallon Islands, nicknamed The Devil's Teeth. A ragged, storm-tossed and desolate set of islands located 27 miles due west of San Francisco, the Farallon's are home to innumerable seabirds, a large colony of sea lions and one of the few known migratory gathering places for Great White Sharks.

Written by Susan Casey, The Devil's Teeth is one of the very best books of 2005. Captivated or obsessed, depending on your perspective, Casey ventures to the Farallon Islands to report on the Great White Shark study of biologists Peter Pyle and Scot Anderson. Venturing daily into the choppy environs that is the Farallons, the author joins the biologists in their dangerous work, tagging along after predators "so old they predate trees". Here's a brief excerpt:

The killing took place at dawn and as usual it was a decapitation, accomplished by a single vicious swipe. Blood geysered into the air, creating a vivid slick that stood out on the water like the work of a violent abstract painter. Five hundred yards away, outside of the lighthouse on the island's highest peak, a man watched through a telescope. First he noticed the frenzy of gulls, bird gestalt that signaled trouble. And then he saw the blood. Grabbing his radio, he turned and began to run.

His transmission jolted awake the four other people on the island. 'We've got an attack off Sugarloaf, big one looks like'.