In Pursuit of the Big One

A can of worms and a lazy creek may be enough to get some people hooked on fishing, but serious anglers need more of a challenge. Fishermen are taking off to the globe's remotest rivers for rod-and-reel battles that send the adrenaline rushing as fast as the water they're wading in. But wilderness trips are not for amateurs: "You need to go with an experienced outfitsome of these fish bite back hard," says Charles Jardine, a coach for England's national fly-fishing teams. Here are three of the most pristineand challenginglocales:

RUSSIA The Kola Peninsula, which borders Norway, is...