You're watching a stream, when all of a sudden, SPLASH!A fish jumps up out of the water and heads . . . upstream?Salmon are incredible fish that make a journey upstream each year to spawn, or reproduce.Found in the cold, dark waters of the northern Pacific Ocean coasts from California to Alaska and from Japan to Siberia, these fascinating creatures can grow to weigh as much as 100 pounds!With breathtaking photographs and fact-filled text, watch salmon...