Octopus Physical Characteristics
Most of us are fascinated by the overall anatomy of the Octopus. Well known for a very large head and eight arms, it is able to move around the water with speed and grace. As it moves the eight arms move along behind it. When one of the arms is lost due to injury it can grow a replacement in very little time.
Many people are dumbfounded to see an Octopus fit into spaces that seem way too small for their bodies. This is possible due to the fact that they don’t have any skeleton to them. They find these place to hide from predators and to remain undetected in the water.
The head of an Octopus is very large. They have a very hard beak on the mouth which you have to look very carefully at the head to find due to the fact that it blends in so well. Each of the eight arms has small suction cups on the ends of them. If you were to cut the body of an Octopus in half, it would be perfectly symmetrical on both sides.
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How Many Hearts Do The Octopus Have?
Most people don’t know it, but the Octopus has three hearts. They have one that pumps blood through the gills for each side of the body. The third one is responsible for pumping the blood through the rest of the body. You may not notice unless you take a very good look at the body of these creatures that they have gills. This organ helps them with breathing as water is circulated through them.
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The foods that the Octopus consume go through a very interesting process. They have to be in bite-sized pieces to go through the esophagus. From there they go into the brain and then routed through the digestive tract and into the stomach. The crop is a sac where the food is temporarily stored before it enters that digestive tract. They have a special type of gland in the body that triggers the digestion process.
Poison And Nervus System
Another gland that they have is to create and hold their venom. That is what they inject into their prey to immobilize it. Without this process, they would have a hard time getting their prey to be still. They rely upon their powerful beak to be able to break the shells of their prey. When they can’t, they have a very powerful sucking ability to take it out of the shell.
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The nervous system for an Octopus is controlled by the brain, and it is very complex in nature. What is very interesting is that they don’t have any organs for hearing. Octopus is an animal that is deaf. They have a sac where the ink is produced when they need to release it and escape from danger.
There is actually a gland in the body that creates it. The amount of ink depends on the species of Octopus and the overall size of it.
There are several different types of movement that the Octopus is able to enjoy due to their overall anatomy. They are often seen walking around at a leisurely pace. They can also crawl by bending the arms at different angles.
They will swim rapidly to avoid danger or to be able to capture their own prey. They also have jet propulsion when they need to flee due to impending dangers so they can go extremely fast.
The vision for an Octopus is very good and they use it to help them move around in the water. They also rely upon their sight to keep a good lookout for various types of predators.
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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 saltwater.
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. One 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 the 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 animals 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.
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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At the ends of the arms of Octopus are suction cups. They contain sensors that allow them to taste their food. These animals are very particular about the overall taste of their food. They will pass up a meal that is readily available if they don’t care for the way it tastes. This will occur even if they are very desperate for food in order to survive.
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Three hearts, a massive brain, and blue blood, they navigate unlike anything else. The earliest octopus fossil is Pohlsepia, which swam the oceans 296 million years ago.
What do octopus eat?
They mainly consume mollusks and crustaceans. They are also known to eat various types of fish and snails.
Sometimes they will also feed upon smaller species of Octopus that are around them when they can’t find enough other food sources for survival.
They have a very strong and powerful beak on their mouths that they use to get prey and to rip them apart. They will swallow chunks of food whole.
Many of the types of foods that the Octopus consume have shells on them. They are able to get their food source out of the shells before they eat them.
When they aren’t able to, they release a type of toxin from the body that will quickly dissolve the tissues that connect it to the shell.
This type of behavior is one that they make seem very easy. Yet researchers find it to be very complex in nature.
Somehow these creatures know if they need to use the toxins and how much. With some prey, they will create two holes and put the toxin into each of them. With others, they only drill one hole. It is believed that they have some instinctive connection for what they should do to benefit from the meal in front of them.
Most of the time Octopus will feed during the night time. They are able to see well in the dark, murky waters which gives them the advantage over their prey. They will hunt during the day though when they are very hungry and an opportunity presents itself. They are amazing predators. Since they can blend in so well to their surroundings they are able to get close to prey without being recognized.
The use of the suction cups on the arms is another way that they are able to capture their prey. There is a sticky type of residue here among the webbing that makes it virtually impossible for the prey to getaway. The foods that they do consume go through the esophagus and then directly up into the brain area. Then they are carried back down the body into the digestive system.
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Octopus Feeding Method?
When Octopus bite their prey, they inject a powerful venom into it. This usually won’t kill the prey but it is enough to immobilize it. That way the prey isn’t thrashing around and fighting back as they are trying to consume it.
Most living creatures tend to eat more before they lay eggs or give birth. For the female Octopus though they don’t eat for about a month before they young are born. They spend all of their time trying to defend the eggs from predators, keeping them clean, and at the right temperature. By the time the young are born they are close to death themselves.
They don’t care for their young when they hatch or teach them to hunt. Instead, the young offspring go to the surface of the water where they will hunt for plankton. As they get bigger and older they will move towards the bottom of the ocean where they will consume the other types of foods mentioned here. Hunting for prey is very instinctive for them though from the moment they come out of the egg.
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