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Warm-blooded Fish?

Posted by Hemos on from the sounds-mighty-fishy-fishy-har-de-har dept.

DIY News writes "Scientists now have direct evidence that the north Pacific salmon shark maintains its red muscle at 68-86 degrees Fahrenheit, much warmer than the 47 F water in which it lives. The elevated muscle temperature presumably helps the salmon shark survive the cold waters of the north Pacific and take advantage of the abundant food supply there. The heat also appears to factor into the fish's impressive swimming ability."

1 of 342 comments (clear)

  1. Nothing new by kiisaka · · Score: 0, Redundant

    It's been known for quite some time that many fast-swimming fish such as tuna are warm blooded.