Most of the time it isn’t difficult to distinguish between making friends and attacking someone, but this octopus doesn’t make the lines very clear.
While no one would enjoy have an octopus suctioned onto their face, this one doesn’t seem to be harmful (and may just be lonely).
I don’t think anyone would actually think this playful little ocean creature is viscous. In fact, he does seem to just be playing, allowing the diver to move him around and handle him with ease.
Although, I would think the initial face sucking move would be a bit unnerving.