Magnolia Pictures released a new trailer for the killer whale documentary “BLACKFISH” set to be released July 26, 2013.  CNN is expected to air the documentary sometime in the Fall 2013.  BLACKFISH tells the story of Tilikum, a performing killer whale that killed several people while in captivity including the much publicized incident involving Dawn Brancheau, a 40-year-old female trainer at SeaWorld Orlando in 2010. Along the way, director-producer Gabriela Cowperthwaite compiles shocking footage and emotional interviews to explore the creature’s extraordinary nature, the species’ cruel treatment in captivity, the lives and losses of the trainers and the pressures brought to bear by the muli-billion dollar sea-park industry.