Octopus And Tropical Fishes

Octopus And Tropical Fishes

Octopus And Tropical Fishes

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Common Octopus

Common Octopus – Octopus vulgaris


There can be quite a difference in the sizes of the Common Octopus. Some of them are only about 12 inches long while others are three times that at 36 inches in length. Some of them are 7 pounds in length and others can be closer to 20 pounds. The fact that there are such differences often results in the Common Octopus being confused with other species.

They feature a very large head and eyes that seem too large for the rest of their body. They are very interesting to look at with eight very long arms going in all directions. They range in colors depending on where they happen to reside. They are very good at using different types of pigment to be able to blend into their surroundings. That gives them the ability to hide right in front of humans and predators.


The Common Octopus is found out there in all of the oceans. They live in both the tropical and temperate areas of the waters. They live in the Mediterranean Sea and along the coast of England. Some other places they have been located include some parts of Africa, the Cape Verde Islands, and the Canary Islands.


The Common Octopus is the species that has been evaluated and observed the most thorough various forms of research studies. They are very smart animals and they have been known to do a variety of extraordinary things. For example they are able to tell how bright an object is, to distinguish different shapes, and to determine the size of objects. They also have great memories for being able to tell patterns that are placed before them.

They have amazing problem solving skills too. For example they can actually figure out how to take the lid off a jar so that they can climb inside of that jar. They can also figure out how to get foods out of lobster traps that commercial fisherman have placed out there.

The Common Octopus is very good at hiding from predators in the water. They can stay in lairs they create. If you know what to look for though you will be able to recognize signs of them being present. They will collect crustacean shells and a variety of other items out there. They create an elaborate fortress around their shelter area.

Common octopus characteristics

Common octopus – Octopus vulgaris

Diet /Feeding

The Common Octopus generally has no trouble at all finding lots of foods to consume. Among them are mollusks, crustaceans, crayfish, and crabs. They are able to get their prey in their webbed arms, then to bite them in order to release a type of venom. That venom is going to make their prey unable to move and so they can consume it easily.

They have sharp beaks that they use to crack open the shells on some of their prey. When that isn’t possible they will drill holes in it to suck out the food. They can also put their saliva on it that is strong enough to dissolve the shell in not time at all.


They have a short lifespan that can range from one to two years. Like other species of Octopus they will die shortly after mating. To help them find a mate they go closer to the shore in the early spring months. The female can lay up to 200,000 eggs a couple of months after mating. While she will do all she can to ensure that they don’t get eaten by predators it is very difficult. Less than 1% of the eggs laid will result in a Common Octopus that lives to the age of maturity.

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Curled Octopus Close Up

Curled Octopus Close-Up

Curled Octopus Close-Up

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Octopus Habitat

Octopus Habitat and Distribution

The Octopus only lives in oceans due to their need for salt water. They are able to be dispersed in plenty of different locations though. The most common area of the ocean for them to reside happens to be along the coral reefs. They create dens where they live and can be undetected in the water. They will also find small crevices and hide under rocks.

If you are in the water looking for Octopus you have to know where to look and what to pay attention to. They are able to blend into their surroundings so well that even a well trained eye may over look one of them if they aren’t’ careful. Even when researchers do find where Octopus live it is only for a small period of time.

They don’t get too comfortable in any one place for very long. They tend to find a new location every 10 to 14 days. Some of them even live in bottles or other rubbish that has found its way to the bottom of the floor in the ocean. They are very opportunistic when it comes to finding a place for them to call home for a period of time.

They are able to live in different temperatures of water. What is very interesting is that the species living in warmer bodies of water are much smaller than those that reside where it is colder. The fact that they can be so adaptable to different areas of the water is one of the reasons that the various species have been able to survive for millions of years.

It is a common belief that all Octopus live at the bottom of the ocean. While the majority of the species do, some of them also live very close to the surface. With most species the young offspring do live at the surface of the water when they first emerge from their shells. This makes them very vulnerable to the different predators out there. As they get older they will move further down in the water.

Where do octopuses live?

Big Octopus in their natural habitat

There isn’t very many areas of the ocean where various types of Octopus don’t reside though. Finding them can be exciting for researchers. Snorkeling is a common adventure for vacationers around the oceans. If you do take part in it try to find squid in the various areas. You will be very amazed seeing them in their natural habitat.

Due to pollution the natural habitat of the Octopus continues to be put at risk. They can’t live well in areas where there are lots of toxins. They have a hard time finding enough food in those locations. It can also be unsafe for the females to lay their eggs in such a region. Sometimes the efforts of humans result in the Octopus having to relocate if they are going to be able to survive.

These animals don’t do very well in captivity at all. They already have a very short life span. Being in captivity can create nervous system problems for them as well as so much stress they won’t eat. Some people do try to keep them as pets in aquariums but it very seldom works for very long. They can also take the lids off and escape, which can occur even when a great design is in place. They are well known for their ability to escape.

Even though researchers know lots about the natural habitat of the Octopus and do their best to recreate it for a great setting, being able to observe them in a captive state is extremely difficult. The new setting alters their behaviors too much for them to be credible.

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