National Observer, Local Journalism Initiative Reporter

A multinational scientific expedition is set to launch to solve the mystery of what happens when salmon head into the Pacific Ocean and how climate change is impacting both the iconic fish and their marine environment. 

Four vessels and more than 60 international scientists from Canada, Japan, the U.S., Russia and Korea are taking part in one of the largest-ever surveys of salmon in the North Pacific from February to March, said Brian Riddell, science adviser for the Pacific Salmon Foundation.