|Photo by Andrea Pravettoni [CC BY 2.0]|
This is the 2nd part of our 3 part article series about interesting facts about the Octopus.You can check the 1st part and the 3rd part also to know more.
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.
16. Octopus suckers are used by it to cling to things, dragging its body on the sea surface and catching objects and prey. The sucker has an inner chamber which increased in size resulting in lower pressure. It is the working mechanism of its suction cups.
17. An average there are 1600 suction cups on an octopus arm. These cups are also its noses. It can smell with its suckers
18. Octopus is a very intelligent creature. It is the smartest among all invertebrates. There are 500 million neurons inside its body. It can learn and has a quick problem solving capability. Octopus can learn very quickly. They are also very curious animal.
Scientists Discovered This Ghostly Octopus in the Deep Ocean Floor
19. Due its proved intelligence, some countries have passed laws about making experiments on them. In UK, octopus is the only invertebrate on which use of anesthesia is a must during a surgery.
20. The octopus can use tools. It is observed by some marine biologists that some octopus can use tools to solve problems.
21. Octopus has a very short lifespan. The smaller octopuses live merely one or two years. The larger ones can live up to five years. If they could live like humans, it is possible that they might become cognitive animal like us.
|An octopus with a Mammoth in a Museum by The Field Museum Library|
23. An octopus has blue colored blood. It does not have hemoglobin which makes our blood red. The function of the hemoglobin is performed by a copper based protein named hemocyanin. This protein is the reason behind the blue color.
24. An octopus can camouflage to hide itself from the predators. It can change colors of its skin to blend in with the surroundings. The coral octopuses are the expert of that art. They can even copy the texture of a coral field or a stone.
25. Octopus can eject a black ink to make the water opaque. They do this under threat. It helps them to flee during the crisis. The ink is made of melanin, the chemical which makes our hair black.
26. When in danger, an octopus can detach one arm to distract the enemy and flee. If you catch one octopus arm firmly, it will simply detach it with its body and escape to safety. That detached arm will behave like a living thing for some times. That defense mechanism can fool most of its predators.
27. Some octopus can mimic other animals. They can change their shape and color in such a way that the predator animal will be afraid. It can mimic the shape of an eel, lion-fish or sea snake.
28. The third arm of a male octopus is its sex organ. It is also called as hectocotylus.
29. The octopus only mates one time in life. The male octopus dies after the mating. The female octopus lay eggs after a few months. The eggs can be as many as 200000 in counts.
30. The mother octopus dies some days after giving birth of eggs. It never eats anything after that which leads its death. During that time it protects the eggs.