Has an orca ever been released?

Has anyone ever successfully released an orca back into the wild? It's a fascinating question, especially considering the complexities of their social structures and the challenges they face in adapting to life outside of captivity. Are there any documented cases of orcas being released and thriving in their natural habitat? Or are there specific factors that make it difficult, if not impossible, for them to survive in the wild after being in captivity? It's an important topic to consider, especially as we continue to learn more about the welfare of marine mammals and the impact of captivity on their lives.