Salmon run plankton. At this point the baby salmon are called "fry". At the end of the summer the fry develop into juvenile fish called "parr". Parr feed on small invertebrates and are camouflaged with a pattern of spots and vertical bars. They remain in this stage for up to three years. As they approach the time when they are ready to migrate out to the sea the parr lose their camouflage bars and undergo a process of physiological changes which allows them to survive the shift from freshwater to saltwater. At this point salmon are called "smolt". Smolt spend time in
Salmon cannery for all of the workers on site. Salmon cannery A salmon cannery is a factory that commercially cans salmon. It is a fish processing industry that became established on the Pacific coast of North America during the nineteenth century, and subsequently expanded to other parts of the world that had easy access to salmon. The "father of canning" is the Frenchman Nicolas Appert. In 1795, he began experimenting with ways to preserve foodstuffs, placing food in sealed glass jars and then placing the jars in boiling water. During the first years of the Napoleonic Wars, the French government offered a