8 Feb 2016

45 Mind blowing Octopus Facts

cool octopus facts

Facts About Octopus Part I

Octopus lives in the seas and oceans. It is an amazing animal. It has surprising abilities. The animal is smart and resourceful. Scientists are always fascinated by these animals and their behaviors.

Octopus lives in various regions of the sea. Most of them can be found inside the dens and holes under the sea. There are over 300 species of them. Some of these are very small while others can be considerably large. Let us know about some more interesting facts about these cephalopods.

The article is written as a series with three parts. The Part I has facts number 1-15, Part II has 16-30 and Part III 31-45.

1. Octopus belongs to the phylum Molusca. It is the same group with the Snails and Slugs. Yes, they are similar type of creatures!

an octopus
Photo By Albert Kok [CC BY-SA 3.0]

2. The octopus is actually belongs to a separate Molluscan class Cephalopoda with its cousins Squid and Cuttlefish.

3. The term “Cephalopoda” means “head-feet”. They are so called because they seem to have no body, having only a head with eight legs.

4. Octopus is a very old animal. The first octopus roamed the seas around 300 million years ago.

5. Pohlsepia mazonensis was the first described octopus species. The fossil of a Pohlsepia was discovered in Illinois, USA. You can see that fossil in the Field Museum of Natural History in Chicago.

6. There is some confusion regarding the plural form of the word octopus. According to the Oxford English Dictionary there are three plurals: octopuses, octopi, and octopod. But modern dictionaries and people prefer the term octopuses.

7. Octopus has eight arms. The arms are full with suction cups. Their arms can be as long as 25ft.

An octopus has no bones. They are the largest among all invertebrate animals. Because of that they can stretch their body to such an extent that they can hide into impossibly narrow passages and holes with ease.

8. It is observed that the octopus arms have their own independent nervous system. An octopus arm can   perform an action without the control of its brain.

9. Some octopuses like to dwell in open seas. Some other species live in the sea bottoms and they never come to the surface.

10. The bottom dwellers usually eat crabs, sea worms and clams. The open sea dwelling octopuses haunt shrimp and smaller fishes. Watch the video to see how an octopus haunts and eats its prey.

11. They can paralyze their prey. The poisonous saliva of an octopus does the trick. After that the sharp beaks of the octopus cut the unlucky animal into pieces
12. Some clams and mollusks have shells which are very difficult to open. In that case, the octopus makes a hole in the shell and injects its saliva inside. The saliva cooks the soft body of the mollusk inside into a soup. The octopus then sucks the soup from the hole.

octopus facts
Photo By Doko Jozef Kotulic [GFDL (CC BY 3.0]
13. An octopus arms can move in different directions with ease. Some researchers are studying the octopus arms to create better robotic hands which will be able to do more complex jobs like surgery with ease.

14. The octopus arms can re-grow. If an octopus arms is lost, it regenerates itself. That capability of a octopus is of great interest to the medical researchers and scientists. They hope to unlock the secret to regenerate lost human organs.

15. The suckers of an octopus arm are very powerful. They attach to everything. But, interestingly, it is observed that even severed octopus arms never attached to its own body or other suckers.