Blackfish is a movie about trainers being murdered at SeaWorld, this movie is bias towards orcas should be in the wild not at an aquarium. The main orca shown in Blackfish is Tilikum, a orca who killed three trainers.
The movie did show clips of the trainers being hurt or killed by orcas, which at times was hard to watch. Blackfish also showed different accidents from other aquariums like the SeaLand incident and the Lorca Parque incidents.
The SeaLand incident was when Tilikum killed Keltie Byrne, who was a 21 year old competitive swimmer who was working at SeaLand as a part time job. Keltie slipped and fell into the pool where Tilikum, Haida II, and Nootka IV was.
The Lorca Parque incident was when SeaWorld sent Lorca Parque a few orcas, the Lorca Parque trainers were unexperience but they continued to run their show. One afternoon, one of orcas (who had Tilikum’s DNA) attacked Alexis MartÃnez.
Another thing Blackfish talked about is that SeaWorld kept Tilikum because of his genes, they used Tilikum for producing babies.
