The Great White Shark (Carharodon carcharias) is a shallow water shark who likes to travel. He has even starred in a few movies, and is famous for his smile.

In a post-Jaws/Discovery Channel world, unearthing fresh data on great white sharks is a feat. So credit Susan Casey not just with finding and spotlighting two biologists who have done truly pioneering field research on the beasts but also with following them and their subjects into the heart of one of the most unnatural habitats on Earth: the Farallon Islands.

Though just 30 miles due west of San Francisco, the Farallons — nicknamed the Devil's Teeth for their ragged appearance and raging inhospitality — are utterly alien, which may explain why each autumn, packs of great whites return to gorge on the seals and sea lions that gather there before returning to the Pacific and beyond. That Casey, via her biologist buddies Peter Pyle and Scot Anderson, can even report that sharks apparently follow migratory feeding patterns is a revelation.

Throughout The Devil's Teeth, Casey makes clear that year upon year of observing the sharks have given Pyle and Anderson (and by extension, us) insights into shark behavior that are entirely new and too numerous to list. The otherworldly Farallon Islands, meanwhile, also dominate Casey's engaging tale as she charts their transformation from ultradangerous source of wild eggs in the 19th century to ultradangerous real-life shark lab and bird sanctuary today. Despite the plethora of factoids on offer, Casey's style is consistently digestible and very amusing. She also has a knack for putting things into perspective. Take this characteristic passage:

The Farallon great whites are largely unharassed. They might cross paths with the occasional boatload of day-trippers from San Francisco, but they're subjected to none of the behavior-altering coercion that nature's top predators regularly endure so that people can sit in the Winnebago... and get a look at them. This is important because despite their visibility at the Farallones, and despite the impressive truth that sharks are so old they predate trees, great whites have remained among the most mysterious of creatures."

Richard Ellis