The shark. . . can sniff one ounce of fish blood in a million ounces of sea water. It can smell its prey from more than a quarter-mile away." "Large packs of piranhas have been known to devour horses and cattle that were crossing streams. There is a record of a 400-pound hog being stripped to the bone by piranhas in a few minutes." "The stonefish's body is covered with warts and coated with algae and slime. It is not only ugly, it is as deadly as a cobra." "With a brief surge of power, an electric eel can light up more than 200 neon bulbs." You don't need a review to tell you that this is far from an unexploited subject. But then it's just as self-evident that Russell Freedman plus killer fish plus dynamite photos of all 13 biters, stingers, shockers, and grabbers add up to a fast-moving item.