Blackfish is a gripping documentary that explores the controversial captivity of killer whales in marine parks, focusing on the story of Tilikum, a captive orca responsible for the deaths of several trainers. The film delves into the psychological and physical impact of captivity on these majestic creatures, raising important questions about the ethics of keeping marine mammals in captivity for entertainment purposes. Through interviews with former trainers and experts, Blackfish exposes the dark side of the marine park industry and advocates for the end of orca captivity. This eye-opening documentary is a must-watch for animal lovers and advocates of animal welfare.