The octopus will quickly grow and mature until it reaches the average adult size, about equivalent to the size of a golf ball. The life expectancy of a Blue-ringed octopus is about 2 years (Caldwell, 2000; McConnell, 2000).
The blue-ringed octopus diet typically consists of small crabs and shrimp. They also tend to take advantage of small injured fish if they can catch them. The blue-ringed octopus pounces on its prey, seizing it with its arms and pulling it towards its mouth.
The Blue-Ringed Octopus (BRO) is a very small organism, belonging to the family of Octopodidae. Like all octopi, they are soft-bodied organisms with eight arms or tentacles.
Blue-ringed octopuses, such as H. maculosa and H. lunulata, display their blue rings as a warning when threatened. They are not aggressive and tend to avoid confrontation by flattening their body and blending into their surroundings. Humans have only been injured when a blue-ringed octopus is provoked or stepped on.
An adult blue-ringed octopus is of the size of a golf ball, but if provoked, they can bite attackers, including humans. A single bite might lead to partial or complete paralysis, blindness, loss of senses, nausea, and resultant death within minutes, if left untreated. No blue-ringed octopus anti-venom has yet been discovered.
The major neurotoxin component of blue-ringed octopus venom was originally known as maculotoxin but was later found to be identical to tetrodotoxin,  a neurotoxin which is also found in ...
The blue-ringed octopus diet typically consists of small crabs, and shrimp, but they may also feed on fish if they can catch them. The blue-ringed octopus pounces on its prey, seizing it with its arms and pulling it towards its mouth. It uses its horny beak to pierce through the tough crab or shrimp exoskeleton, releasing its venom.
Don’t forget to read all these essential blue ringed octopus facts such as blue ringed octopus diet, habitat, reproduction, and classification. Even with its small size, the blue tinged octopus is one of the deadliest creatures. The worst thing is that the victim does not feel any pain of its bite but effects are certainly speedy and sometimes fatal.
The octopus also has characteristic blue lines running through its eyes. Distribution and habitat. The greater blue-ringed octopus is widespread throughout the tropical and subtropical waters of the Indo-West Pacific, from Sri Lanka to the Philippines and from Australia to Papua New Guinea, the Solomon Islands and Vanuatu.
According to National Geographic, blue-ringed octopus, also referred to as Hapalochlaena, is considered one of the ocean’s most venomous creatures. This is because of its saliva that contains tetrodotoxin, which is a potent neurotoxin, and could trigger respiratory failure. There are about 10 species of this creature found from Japan to Australia.