Few people are aware of the fact that:
In 1980 Sea World San Diego (SWC) had four young (untrained) Orcas in their petting pool where for over a year they interacted with thousands of untrained visitors to the park with no trainer oversight and no one was ever hurt. EVER.
I had the privilege of getting to know these four Orcas (Kasatka, Katina, Kotar and Canuck II) through visiting every weekend for both days for almost a year without the restrictions of having to be a trainer or working for the park. I was able to earn their friendship and trust without the need of food to coerce the interactions as park staff does in/for shows, but just patiently waiting for them to come over and check me out. Kasatka (the Orca in the above photo) was featured in "Blackfish" and is the same Orca that, after much behavior modification by the parks, is shown repeatedly dragging one of their top trainers, Ken Peters, underwater in 2006.
Once we had gotten to know each other well, on more than a dozen occasions one grabbed my arm in its mouth, like in the above photo, up the elbow (in the same manner the final reports say Dawn was grabbed) as had been done to me many times before by the BNDs in the tank there and at other parks I visited back then and gently (for them) pulled on me inviting me into the water. Once two tried this at the same time, one on each arm and almost succeeded. Unfortunately, though I wanted to, I could not accept their invitation to get in the water and play and I was able to get across to them that while I was OK with the idea, the park would not have allowed it. Had there been any desire to harm me on their part for any reason, the opportunity was certainly there and yet I am still whole, alive and unharmed. As are the many other visitors to the park who had similar experiences with them.