Springer, officially named A73, is a wild orca from the Northern Resident Community of orcas, which frequents the waters off the northern part of Vancouver Island every summer. In January 2002, Springer, then a calf developmentally equivalent to a human toddler, was discovered alone and emaciated some 250 miles from the territory of her family. Experts identified Springer by her vocal calls that are specific to her family, or "pod," and by examining photographs of her eye patch. They were also able to determine where Springer's pod was currently located.

Keiko was a male orca captured in the Atlantic Ocean near Iceland in 1979. He was best known for his portrayal of Willy in the 1993 film Free Willy. In 1996, Warner Bros. and the International Marine Mammal Project collaborated to return Keiko to the wild. After years of preparing Keiko for reintegration, Keiko was flown to Iceland in 1998 and in 2002, became the first captive orca to be fully released back into the ocean. On 12 December 2003, he died of pneumonia in a bay in Norway at the age of 27.