Fortunately for the inhabitants of the earth, the defense mechanisms of octopus and squid are not a serious threat to humans. Most of its poisons are strong enough to subdue their typical prey, but not to harm humans. The bite of the Pacific Giant Octopus will not only hurt, but it will also inject poison into its target (although this poison is not deadly). Cephalapid attacks in humans have been reported since ancient times.
A significant part of these attacks are questionable or unverifiable tabloid stories. Cephalopods are members of the Cephalopoda class, which includes all squid, octopus, cuttlefish and nautilus. Some members of the group are capable of causing injury or death to humans. But if you insist on annoying him, the octopus has more ways and the right to defend itself.
An octopus bite can be an unpleasant experience, even if it feels relatively painless at first. Its beak is sharp and the muscles around it are strong. The most important thing is that all octopus are poisonous, even if their venom is not lethal, as is the case with the aforementioned species. However, an octopus bite will cause bleeding, swelling, and severe pain.
Medical treatment is required and symptoms such as nausea and weakness may persist for a few days. Some octopuses have venom that can even be deadly to humans, but attacks are rare. In fact, wrestling with octopus was actually a sport in past decades, although it has since been banned in places where it was popular, such as Washington State. Of course, there are a number of species ranging from scary big guys worth fighting for to this irresistible little guy.
Divers speculated that the octopus may have thought that its reflection in the camera lens was a smaller octopus, which could have motivated it to attack. The driver is easily separated from the octopus, which quickly returns to the ground to camouflage itself. Then there is the lesser spirit of Akkorokamui, present in the Japanese Shinto religion, which is a huge mythical octopus of striking red color with the ability to amputate itself. Most octopuses are intelligent enough to fear humans and remain well hidden and camouflaged in their presence.
The large blue-ringed octopus, however, is considered one of the most venomous animals known; the venom of one is enough to kill ten adult humans. Although octopus bodies are soft and boneless, they have hard beaks made of chitin, the same substance that forms the exoskeletons of arthropods such as insects, spiders and crustaceans, Trautwein told Live Science in an email. It's important to note that all of the encounters listed occurred after humans invaded the octopus's personal space or territory, so unless you're a professional, it's best to admire the Giant Pacific from afar. But a video from Vice's Munchies series explains how chefs cook and prepare octopus so customers who eat it don't drown.
Still, prevention is better than cure, so now that you know these deadly octopuses, you can make sure you keep a safe distance if you encounter one. Once again, the octopus was not directly attacking the diver, but seemed to frown at the invasion of his personal space. Estimates of the number of recorded deaths caused by blue-ringed octopuses vary, ranging from seven to sixteen deaths; most scholars agree that there are at least eleven. However, octopuses don't just use their intelligence and appearance for fun; if they feel threatened or uncomfortable, the Pacific Giant Octopus has been known to defend itself against humans.