Since SeaWorld's founding, they have had 62 orcas in captivity. Of these 27 have a record of 1 or more incidents (1). Twelve of the 27 have only 1 or 2 incidents logged.
Tilikum has 4 logged incidents that resulted in the deaths of 3 people. His poolmates at Sealand, Nootka 4 and Haida 2, also sold to SeaWorld, have respectively 3 incidents and 1 incident. Kyuquot the child of Tilikum and Haida 2, born at Sealand then sold to SeaWorld, has 2 incidents. This is curious given that Nootka 4 and Haida 2 arrived at Sealand years before Tilikium and remained there longer in that same environment. Orcas have distinct personalities. Maybe Tilikum was more susceptible to the negative environment at Sealand or was more affected having been the least dominant orca?
The majority of incidents are attributed to a very few orcas. In fact 7 out of the 9 orcas with the greatest number of logged incidents are exactly those forming the backdrop of incidents and aggressions presented in Blackfish:
• Orkid – 17 incidents, female
• Kasatka – 12 incidents, female
• Kayla – 8 incidents, female, not shown in Blackfish
• Keto – 6 incidents, male, 1 human death
• Kandu 5 – 5 incidents, female
• Katina – 5 incidents, female
• Corky 2 – 4 incidents, female
• Tilikum – 4 incidents, male, 3 human deaths
• Tuar – 4 incidents, male, not shown in Blackfish In Blackfish, Katina is first mentioned as harassing Tilikum when he arrives at SeaWorld. She is shown giving birth to Kalina, the first captive born orca to survive. She is shown crying when Kalina is transferred to another park. Kasatka is shown crying for Takara, when she is transferred to another park. Kasatka is also shown repeatedly pulling trainer Ken Peters underwater. Kandu 5 is shown bleeding to death after a fight with Corky 2. Orkid, along with Splash, pull Tamerlee underwater, breaking her arm. Keto kills trainer Alexis Martinez at Loro Parque. These are the bulk of the incidents depicted in Blackfish other than those directly involving Tilikum.