The diagrams show the life cycle of the salmon, from birth to mating and all that lies between. In the first place,

The diagrams show the

life

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cycle of the

salmon

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, from birth to mating and all that lies between. In the first place, the

salmon

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start

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starts

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its

life

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as an egg in the

slow moving

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slow-moving

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upper reaches, hidden from predators among the reeds. After 5 to 6 months, the egg hatches and the baby

salmon

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, or “fry” begins its journey to the lower river, living in the fast current for four years until it becomes an adolescent. At

this

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point, known as “smolt”, the adolescent fish will have grown to a size of around 15cm.

Then

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it migrates to the open sea and starts its 5-year

life

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there, during which time it

finally

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develops into adult size (70 to 76cm). After

that

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that,

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it turns around and begins the arduous process of returning upstream to the head of the river, where it will mate, lay eggs and

thus

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continue the

life

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cycle anew. In short,

salmon

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grow to maturity through three main morphological stages. Each stage takes place in a different aquatic environment. The first two stages occur in freshwater environments,

while

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the third stage occurs in seawater environments.