In many cases, a human can escape the clutches of a small to medium-sized octopus simply by swimming. It pushes forward to create a pulling pressure on the octopus's arms. If you can't escape, or if you feel like you're being pushed back, continue to the next step. The giant Pacific octopus has three hearts, nine brains and blue blood, which makes reality stranger than fiction.
Paralyzing Toxins The saliva of the giant Pacific octopus contains the proteins tyramine and cephalotoxin, which paralyze or kill prey. The largest known octopus species, the Pacific giant octopus, can reach sizes larger than 16 feet (5 meters) in diameter. Octopuses are serious cannibals, so a biologically programmed death spiral can be a way to prevent mothers from eating their young. Although octopus and squid are formidable fighters in nature, they are usually not dangerous to people.
Initially, the octopus will secure itself to a rock or coral formation and stretch to grab you with just one or two arms. Octopus or octopus (both are technically correct) are one of the best known animals with multiple hearts. Octopuses and their relatives squid change their colors and skin patterns when they feel alarmed. Octopuses (no, not octopuses) may seem soft, and most of them are, but eight-armed animals also have a secret weapon in the middle of all those tentacles: a scissor-like beak.
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. In particular, the Coleoidea subclass (cuttlefish, squid and octopus) is thought to be the most intelligent invertebrate and an important example of advanced cognitive evolution in animals, although nautilus intelligence is also a topic of growing interest among zoologists. Octopus bites can cause bleeding and swelling in people, but blue-ringed octopus venom (Hapalochlaena lunulata) is only known to be deadly to humans.