Book excerpt: "Be a shark expert. Travel under the sea and swim alongside the most fascinating sharks to roam the underwater world with The Ultimate Shark Field Guide - created as if a marine biologist painted these illustrations and made these notes during an expedition across the seven seas. Encounter sharks of all shapes and sizes and note observations on each species' appearance, size, diet, and more. With The Ultimate Shark Field Guide, explore underwater landscapes and get up close and personal with these fearsome predators, curious creatures, and deep-sea lurkers." -- back cover of work