As amazing as the blue-ringed octopus looks, it is definitely not an animal that you want to mess with. One bite from this bad boy can kill a person in minutes, there is no anti-venom, and it has enough stored up to take out over 20 people. I for one welcome our new cephalopod overlords.
This particular octopus was done by Jeff Ortega from Evil From the Needle in London.
Check out the full sized image in the new skool tattoo gallery.