North Pacific Giant Octopus

North Pacific Giant Octopus – Enteroctopus dofleini


The winner of being the largest of all Octopus species in the world is the North Pacific Giant. This one can be close to 150 pound when it is fully mature and be as long as 15 feet. When you consider that some species are only a few inches in length and weight a couple of ounces there is a huge difference. The overall size of these Octopus really depends on the location where they live and what they feed on there.

You may read stories out there about some being much bigger than that. While those stories do continue to circulate they haven’t been verified. However, many experts don’t doubt at all that they can grow to be quite a bit larger than what we have recorded. Since they can blend into their surroundings so easily it can be very easy to miss one when it is right in front of you.

The ability to change colors due to pigmentation is very easy for this particular species. Since they can’t move as quickly or fit into small crevices they use the changing of color to blend in and to avoid being detected. They are normally a shade of red or brown and they can be light or dark. Yet due to their many habitats they can be just about any color.


The anatomy of a North Pacific Giant Octopus is very interesting. They tend to lie flat often on the bottom of the ocean so they seem to be like a tan starfish. It is this blending in though that makes them able to avoid detection from various types of predators. They have very long arms that are also thick. Along the length of them are many suction cups.

They have a head that is quite large compared to other species of Octopus. They have a mantle part of the body that is spherical in design. This is part of what helps them to be able to move around effortlessly.


No one really know for sure what has occurred throughout time for the North Pacific Giant Octopus to take on the role that it has. There is only speculation about how they have changed from millions of years ago until the present. It is strongly believed though that they have been able to continually adapt to their changing environment. The development of so many arms may be directly linked to the evolution process for them.


We don’t have very much information at all about the North Pacific Giant Octopus when it comes to their behavior. What we do know about them is that they have the ability to learn new things all the time. They can adapt to a changing environment though their learning skills. They are able to solve problems and they have excellent memories.

They do seem to spook easily and since they can’t move as fast as other species of Octopus they will release ink to get away. They seem to do this more often than other species of Octopus and they also produce a larger volume of the dark ink because they have bigger glands for the production of it.


The North Pacific Ocean is home to this species of Octopus. They tend to live about 200 feet below the surface of the water. Yet they have been found to live deeper and that is believed to be due to the changes in their environment. When they don’t have enough food to eat or they can’t find shelter then they will move deeper in order to have those basic needs met.

Octopus propelling over hard coral reef

North Pacific Giant Octopus – Enteroctopus dofleini

Diet/Feeding Habits

They spend most of their night time hours looking for food. The drawback of being a larger species is that you have to eat more to have energy. There is usually no problem though for the North Pacific Giant Octopus to find more than enough to eat in their natural environment. Some of their common items include fish, crabs, clams, and shrimp.

You may find it hard to believe but they have also been known to consume some of the small species of sharks out there. This can offer them a great meal and one that means they don’t have to hunt anymore for a day or two. They are opportunistic so they will do what they can to benefit as those chances for great meals happen to come their way.

The fact that they can consume these sharks has been verified through the stomach contents of some that have been captured in nets or killed accidentally. Without that type of information to verify it though this would continue to be considered a myth. The fact that they can consume small sharks really shows us how powerful the North Pacific Giant Octopus can be.


Mating is about the only time that the male and female North Pacific Giant Octopus come into contact with each other. The process of mating involves the male taking a sperm sac from his body and placing it into the mantle of the female. This sac has a very thick protective coating on it because she may carry it around for about six months before her eggs are ready to be deposited.

There is also lots of sperm in that sac because she will need to allocate it among approximately 100,000 eggs. That process can take her many weeks to complete and it will consume every bit of her time. The role at that time switches from her own needs to protecting the eggs at any cost. She will do all she can to keep them clean and to keep predators at bay.

Around the same time that her eggs hatch she will be at the end of her life span. For the males they will die very soon after mating. The life span is prolonged for the female to give her time to pass on survival to the next generation. Even in the best of conditions this species of Octopus doesn’t live more than 3-5 years. Yet that is considerably longer than many species with a life span of less than one year.

These offspring are extremely small at birth but have the ability to swim and to be able to find food. Yet they are also highly regarded as a source of food by predators out there. Out of those 100,000 eggs only about 1,000 of them will survive the first few months of life. Even less than that will reach the age of maturity.


Even though this is a large sized Octopus that doesn’t make it exempt from predators. In fact, there are some large ones out there that find it to make a very nice meal. Among them include Sperm Whales, Sea Otters, and Harbor Seals. It really depends on the location where the happen to live.

Humans do find capturing them to be ideal due to their size. They can offer quite a large amount of meat to be used for various types of food dishes. They also like to get rid of these creatures in the water because they consume many of the other creatures that they are trying to commercially harvest. Even so, there doesn’t seem to be a problem when it comes to their overall numbers remaining out there.

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Octopus Facts

Top Octopus Facts

You already know that the Octopus is an amazing creature, but there are plenty of fun facts to discover about them as well. Chances are you only know the basics of these creatures, but that is all about to change.

The Octopus only lives in oceans due to their need for salt water.

There is no skeleton for an Octopus. This is why it is able to get into very small spaces.

They are considered to be the most intelligent of all invertebrates.

There are many stories about humans being killed by Octopus but most of them aren’t true at all. Once species called the Blue Ring Octopus does give off a type of venom that can kill humans.

The ends of the arms on the Octopus have small suction cups. They have sensors on them that allow them to taste food.

The life span for an Octopus is very short. Many species don’t live longer than six months. Others can live out to five years. The males often die within a few months of mating. The females usually die after they hatch their eggs.

There are more than 300 known species of Octopus. Most experts believe that there are many more we will discover as time goes on.

Each Octopus has three hearts. Two of them allow the blood to circulate to the gills. The other is for the body to circulate the blood.

Octopus can change their coloring to blend into the surroundings for protection. They can also try to act like an Eel or other animal to scare off predators.

A female Octopus can lay up to 200,000 eggs at once depending on the species. Approximately 2/3 of the offspring will die within the first couple of weeks of life.

They have extremely good eyesight.

The largest species of Octopus is the North Pacific Giant Octopus. They can weigh about 100 pounds and have arms up to 14 feet long. The smallest species is the California Octopus. They are less than 1 inch in size.

Octopus is consumed around the world and prepared in a variety of ways. It can be eaten alive, raw, and cooked. It is also cooked with a variety of different spices. You will find tons of recipes online you can try.

Some people keep Octopus as pets because they want to own something exotic. They are well known escape artists though, with the ability to get out of even the most secure tanks.

They are considered to be very strong for a creature of their size. They can lift things that are many time their own body weight.

Some species of Octopus have been able to successfully kill large types of fish and sharks.Top Octopus Facts

Sometimes it is called the Devil Fish due to the appearance of it. In earlier times this particular appearance was considered to be evil by men on fishing boats.

Should an Octopus lose an arm it can grow another in its place.

They don’t have the ability to hear. They also don’t have any type of organs that give the impression that they were ever able to in the past either.

There are some Octopus that live in very shallow waters but the majority of them live close to the floor of the ocean.

The smaller an Octopus is the more dangerous it can be due to the amount of toxic poison in the body.

None of the species of Octopus make any types of sounds for communication.

Even though these are water creatures, it is known for them to leave water for brief periods of time when in their natural environment.

The Octopus is categorized as a mollusk.

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An Octopus Hides In His Lair

An Octopus Hides In His Lair

An Octopus Hides In His Lair

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