Nine popular questions & answers
About Blue Ringed Octopus
What is the size of a Blue Ringed Octopus?
10 to 20 cm (5 to 8 in).
How can I see If The Blue Ringed Octopus is aggressive?
Flashes Bright Blue Rings.
Why dos the Blue Ringed Octopus Attack?
Only when hunting and defending itself.
Where do I find the Blue Ringed Octopus?
Indian and Pacific Oceans (Shallow waters).
What Is The Name Of the Poison The Blue Ringed Octopus produce in its salivary glands live bacteria?
The Chemical Tetrodotoxin.
Who poison are the Blue Ringed Octopuses venom?
Tetrodotoxin is one of the most poisoned chemicals produced by any animal.
How Dos The Blue Ringed Octopus Venom Affect humans?
HOW IT WORKS: After 1-2 minutes, the venom paralyzes the victim by blocking the nerves system that controls muscles from transmitting messages. The target will remain fully conscious, and Then Death usually occurs as a result of lack of oxygen.
Has Anybody Got Killed By A Blue Ringed Octopus?
REPORTED CASUALTIES: Tow people in Australia an one in Singapore. But Many have come close to death.
How Poisonous Is The Blue Ringed Octopus?
TOXIC LOAD: The Blue Ringed Octopus carries enough venom to kill twenty-six full-grown human beings in just a matter of minutes.
Despite its modest size, it packed with enough poison to actually kill twenty-six full-grown human beings in just a matter of minutes. Their bites are usually small and painless, people do not know they have been poisoned up until respiratory system and paralysis start to set in.
The Blue-Ringed Octopus is one that has a trademark feature about it. They have rings of blue that are around their bodies. Even when they change colors to blend into surroundings those bluish identifying marks are there. Luckily, they live in areas where such colors are often seen as part of the coral reef. They aren’t a give away to predators or even to humans that there is an Octopus present.
They are normally a yellowish coloring but you may not see them in that original color. With the location where they live it can often be a brownish or a cream color that they will portray. That way they can really blend in well to the surroundings. The bluish coloring of them is quite distinct though so you should always be able to determine them from other types of Octopus.
The body of the Blue-Ringed Octopus is very impressive. They are very small in size but their anatomy allows them to be very powerful. The body is very flexible due to the fact that they don’t have a skeleton. They are able to move very quickly through the water as well. The body is very small with an overall length of about 8 inches. However, the arms can spread very wide when they are trying to capture prey.
They are usually seen swimming in the water instead of crawling. They do lay sideways though which is why it is so easy for someone to end up stepping on them in the water. What is unique is that such a small creature can have such a powerful amount of venom in their bodies. It is a huge mystery when it comes to the design of their anatomy.
There are experts out there with an explanation for that though. They believe that this powerful venom is the result of evolution. It has made it a powerful source to be reckoned with in the water. They believe that the venom has only continued to get stronger over time.
Evolution is a huge issue with any animal, it is a way to see where they once were and how that has allowed them to be shaped today. Yet there isn’t very much to know about the Blue-Ringed Octopus. It is really a mystery about how they came to be about. They have a body that is very different from other types of creatures that live in the water.
They have proven high levels of intelligence as well as the ability to adapt to their environment. It is believed that the ink sac they have is one part of evolution. It offers the Octopus a way of escaping predators so that they can survive.
This is one of the most aggressive species of Octopus in the world. They aren’t as likely to run and hide as they normally would. They also will fight with other Octopus in the area to be able to keep their food and shelter to themselves. With most other species they simply ignore each other but that isn’t the case here.
The venom that the Blue-Ringed Octopus is able to release is a huge concern for humans. In fact, it is the only type that is able to kill human if they get bitten by one of these octopuses. That is a prime reason why many people avoid bodies of water where they happen to live. They worry about stepping on one and it biting in retaliation.
This type of Octopus isn’t as widely distributed out there as many others. That is good news since they are a force to be reckoned with. They are known to reside in certain areas of the Pacific Ocean. The largest groups are in the waters around Japan and Australia. Determining the exact locations of them there can be difficult as they move often. They continue to find new homes every couple of weeks for safety.
Blue Ringed Octopus – Genus Hapalochlaena/ Photo taken by Jens-Petersen
They generally are able to find plenty to eat due to the diverse nature of their diet. They hunt at night and thanks to their excellent vision they are able to find food with no trouble at all. They consume shrimp, fish, and hermit crabs. They are successful hunters due to their speed. They are able to place venom into the body of their prey in very little time.
This process is one that completely paralyzes the prey. This gives the Blue-Ringed Octopus plenty of time to come in and to use its powerful beak to break the shells. Then it can consume the food source inside of it. They are also known for their cannibal behaviors. Yet it is important to point out that they consume each other for territorial rights and not due to the urge to find food.
As I mentioned they are very isolated due to the aggressive nature they portray. They do change that tune though when they are ready to take part in mating. The males and females will stay in the same area for a couple of days in order to for the mating to occur as many times as possible during that period of time.
The males love the act of mating, and so the females have to push them away after a couple of days. They will be persistent which can result in some bitter battles taking place. The females are ready by then to be left alone and they will do whatever they have to in order to get that message conveyed to the male.
Once they are done with the mating process they will go their separate ways. The females will have about 50 eggs that develop in their bodies. They will fertilize them with the sperm they gathered from the male. Once she has successfully done that she will place them securely under her arms. The suctioning power will keep them in place until they are ready to hatch.
Both the males and the females have a very short life span. The males will die soon after mating is finished. This can be within a couple of days or they may have a few weeks of life left. For the females, once she has those eggs to care for her own needs are no longer a priority. She will begin shutting down too with her death being very close to the hatching of her eggs. The average life span for this Octopus is 1 ½ year.
There are quite a few different predators out there that the Blue – Ringed Octopus has to deal with. They include whales, eels, and birds. These types of predators are able to get to them very quickly and with the element of surprise on their side. There are times though when these predators become the prey due to the Octopus getting a good bite. That will immobilize them. The Octopus can either feed or it can swim away.
Due to the very danger of these octopuses, they are also heavily hunted by humans. They figure it is best to get rid of them from the water than to live in fear of them. Most people don’t seem to think there is anything wrong with hunting them so that people can be safer in the water.
California Two-Spot Octopus – Octopus bimaculoides
The California Two-Spot Octopus offers a very distinct appearance. It is also known by the name Bimac Octopus. They have blue spots around the eyes that can vary as far as the shade of it. The body spans about 7 inches in regards to the mantle. The arms though are considerably longer with a reach of about 25 inches.
The coloring for the overall body though can be very different, it all depends on where they happen to be in their environment. They are commonly a grayish coloring with yellow spots on them. They do have the ability to change colors though through the control of their pigments.
With a name like this, there is no guess work involved with where they happen to be located. They do very well in the warm waters, from 65 to 72 degrees Fahrenheit. While that is where most of them live though there are some other locations they have for habitat as well. They include the waters of Mexico, Africa, and areas of Japan.
They tend to live about 65 feet below the surface of the water. Generally Octopus live much deeper so this gives people the opportunity to see them frequently compared to other species. Therefore they are in the shallow areas so they can reach the sandy bottoms of the water. They like to hide in rocks and crevices found there.
When it comes to Octopus this is believed to be one of the friendliest species. They do spend most of their time isolated. However, if you are going to have a type of Octopus as a pet then this would be the one to have. They are very intelligent animals though so if you have one as a pet you need to be prepared. They are known to find ways to take the lids off of aquariums and escape.
They don’t seem to go into hiding as much as other species of Octopus in the wild. They seem to be more confident in their ability to blend in. They are tolerant of other types of Octopus around them too as long as they aren’t directly competing for food.
California Two-Spot Octopus – Octopus bimaculoides / Photo taken by Jeremyse
The California Two- Spot Octopus has plenty of opportunity for feeding where they reside. A steady stream of mollusks and crustaceans are readily available. They are easily able to remove the shells from most of their prey. Those that they can’t are removed through the toxins in their saliva. These Octopus will also eat small fish when they have the opportunity.
Mating takes place at a young age for these Octopus as they have a life span of no more than two years. The males will avoid females until they are ready for mating, and then aggressively pursue them. It is common for them to mate with as many females as they can. After that period of time is over though the functions of the body simply start shutting down. The males won’t live more than a few weeks after mating.
The females have the same destiny, but first they have to fertilize their eggs with the sperm that the male has deposited into their body cavity. They will fertilize the thousands of eggs one by one. Then they tuck them under their arms in an effort to protect them until they are ready to hatch. Exhausted and without food for months the female will die as they start to hatch.
Many people have reported interacting with this particular species of Octopus due to the shallow waters where they live. Generally the Octopus will swim away in a hurry. Sometimes it will release ink too in order to help them get away without being followed. They aren’t dangerous to humans so there is nothing to worry about if you are in the water with them.