Blackfish is a documentary about killer whales held in captivity – specifically in SeaWorld. The film shows the truths about animals living in confinement their entire life and how detrimental it can be in the long run. Blackfish also questions and debates many of the facts that SeaWorld provides to customers and employees. The film shows how the whales are captured and the inhumane ways they are treated from that time on. Blackfish provides real footage of whale attacks on trainers and interviews with trainers from SeaWorld for a more personal and dramatic effect.