I remember purchasing a can of Chicken of the Sea tuna and finding not one but several intact vertebrae of a fish intact. I sent a letter to the company noting that I use my hands to break it down and found it. I said that had I not and simply mixed it up I could have easily choked on it.
I was not asking for anything other then to make them aware that I found it and there might be other cans affected. I took photos, etc. They sent me a nice letter and reimbursed me for the tuna. I was fine as I wasn't hurt and wanted nothing in return other then to prevent someone else from possibly being hurt.
I like salmon bones. We used to fight over them as kids.