Competition is fierce...
If I didn't have the photos, I'd have a hard time explaining what we were amazingly lucky to have witnessed. And, the competition went on for over 20 minutes so our entire group was able to both see it and get photos... So, what did we see?! There were a total of FOUR blue-ringed octopuses; two were mating and two were trying to unseat the male to pass on their genes instead. I have a myriad of pictures from just the two mating to the males trying to "display" their way into the female's heart to this image when one of the other males tried to literally pull the tentacles away and take over. It was absolutely incredible to see!
So this is my current max-blue-ringed-octopuses-in-one-image to beat - THREE!