First warm-blooded fish discovered off California's coast
Light vehicle traffic is seen on the Golden Gate Bridge in San Francisco, California December 11, 2014. (REUTERS/Robert Galbraith)

NOAA Fisheries biologist Nick Wegner holds an opah caught during a research survey off the California Coast. (Credit: NOAA Fisheries/Southwest Fisheries Science Center) While conducting research off the coast of California recently, NOAA Fisheries scientists discovered that the opah, or moonfish, is the first fully warm-blooded fish. Capable of circulating…