How old are salmon when they migrate from fresh water to the ocean?

That depends on species:

  • Chinook
    • Fall Chinook, 3-4 months after hatch;
    • S pring Chinook, 12-16 months;
  • Coho--12-24 months;
  • Chum--a week to a month;
  • Sockeye--12 months to 36 months;
  • Pink--a week to a month.