The Chinook Salmon

What role do Chinook salmon play in ocean ecosystems?

• They are predators of orcas.

• They are an important part of ocean ecosystems, particularly the ecosystem of the Southern Resident orcas.

• They have no significant role.

• They only live in freshwater.

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How do Chinook salmon contribute to the ecosystem?

• They are a food source for many animals.

• They play a key role in the cycling of matter and the flow of energy in this ecosystem.

• They destroy habitats.

• They do not contribute.

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Chinook salmon are _______.

• anadromous

• terrestrial

• herbivorous

• nocturnal

What is the meaning of 'anadromous' in relation to Chinook salmon?

• They live only in the ocean.

• They begin their lives in freshwater river habitats, then migrate to the open ocean for most of their lives.

• They are born in the ocean and stay there.

• They do not migrate.

Where do adult Chinook salmon return to reproduce?

• The ocean

• The rivers they were born in

• Any river

• Lakes

What is the first step in the life cycle of the Chinook salmon?

• Chinook salmon die in the freshwater river.

• Chinook salmon reproduce.

• Chinook salmon migrate to the ocean.

• Salmon eggs are fertilized in a freshwater river.

Salmon eggs are fertilized in a freshwater river during the fall. What happens in the following spring?

• The eggs remain dormant.

• The tiny fish, called fry, hatch.

• The salmon migrate to the ocean.

• The salmon die.

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Chinook salmon fry stay in the freshwater river for about how many months?

• 3 months

• 5 months

• 8 months

• 12 months

The process of smolting involves the fish going through physical changes in order to survive in _______.

• freshwater

• salt water

• the ocean

• rivers

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Chinook salmon arrive at the ocean, where they will spend up to how many years?

• 2 years

• 5 years

• 8 years

• 10 years