A sweltering heat wave in much of Western Canada in the last week of June had cascading effects on sea life, experts say. Scott Hinch, director of the Pacific salmon ecology and conservation laboratory at the University of British Columbia, said juvenile salmon such as sockeye, coho and chinook in fresh water would have been most affected by recent heat waves. “They’re going to be living in fresh water for one to two years and it’s that life history stage, that this particular heat wave and just climate change in fresh water in particular, is going to have some of its greatest effects,” he said in an interview.