Adam's River Sockeye Salmon Run

When sockeye salmon are ready to spawn, they change colour. Their bodies become a bright red, while their heads turn green. The males also get a hooked snout, which they use for fighting off other males.

 

Featured in an article on the David Suzuki Foundation website, entitled, "Science must be free from political interference" (August 15, 2011) www.davidsuzuki.org/blogs/science-matters/2011/08/science...

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Taken in October 2003