Ratings for Supernatural’s ‘Survival of the Fittest’ May 19, 2012 News The season finale of Supernatural got a 0.6, down from last weeks 0.7. Source: TVBytheNumbers Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window) Related