Consider the situation faced by salmon that spawn (reproduce) in freshwater but live most of their lives in the ocean. The fry (baby salmon) hatch in fresh water but at young age move downstream to ocean where they live and grow for 2-4 years, depending on the species. The adults then return to the freshwater stream when they hatched to spawn themselves.
What are the osmotic challenges faced by these animals?
How do salmon deal with these osmotic challenges?
What does “anadromous” means?
Can you identify other anadromous species?
Remember to cite your source and put your answer in your words.
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