::: As the editor who placed the tag in the first place, I suppose I'm to blame. In my own defence, I have a great interest in diving-related articles, but very little expertise in this particular topic, and would not know where to start in garnering references for it. My intention was to attract other, more knowledgeable editors who would be able to contribute references, but I admit that that has yielded little result in the interim. Looking through the revision history shows that a lot of the content was added by editors who are no longer with us, but of those remaining,  and  may possibly be able to help.