Fish more vulnerable to warming water

By Seth Borenstein
Updated July 3 2020 - 10:36am, first published 10:30am
A marine heatwave last year caused large numbers of migrating salmon to die in Alaska's rivers.
A marine heatwave last year caused large numbers of migrating salmon to die in Alaska's rivers.

Global warming looks as if it will be a bigger problem for fish than scientists first thought, with a new study showing that when fish are spawning or are embryos they are more vulnerable to hotter water.

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