Weird Nature 23 Fun Facts You Should Know About Octopuses  

Corey Barger
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Octopuses are extremely complicated, mysterious, talented creatures with a long list of hidden talents! These spineless but colorful sea-dwelling beasts have been around for ages keeping life in the ocean interesting. Check out this list of the most fun octopus facts and quickly see why these creatures reign supreme on the ocean floor.

This list of random octopus facts will make you fear and admire the animals down below... if you ever see one. They are masters of defense with the ability to camouflage their entire bodies in mere seconds. In addition, they are extremely agile due to their lack of a skeleton, and they can even grow back arms they've lost! And let's not forget the way octopuses use ink to deter predators. That unique defense mechanism has fascinated humans for centuries! These interesting octopus facts are only the beginning on this list, full of fun information about octopuses.

Take a look at all the facts below and vote up the coolest and most interesting octopus tidbits. And watch out for those arms - they are more than just suction cups!

Octopuses Have Three Hearts


Octopuses Have Three Hearts is listed (or ranked) 1 on the list 23 Fun Facts You Should Know About Octopuses
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Two of an octopus's hearts move blood though the body, beyond the gills, while the third keeps circulation flowing for its organs. That third heart, called the systemic heart, stops beating when an octopus swims. This is suspected to be part of the reason why octopuses prefer to crawl.

Source: Smithsonian

Octopuses Have Blue Blood


Octopuses Have Blue Blood is listed (or ranked) 2 on the list 23 Fun Facts You Should Know About Octopuses
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Octopuses have evolved a copper-based blood (rather than iron-based blood, like humans have) that allows them to survive in the deep ocean. This type of blood is blue due to a protein called hemocyanin, and it is efficient at transporting oxygen throughout the octopus's body in low temperatures.

Source: Smithsonian

Octopuses Are Camouflage Experts


Octopuses Are Camouflage Exper... is listed (or ranked) 3 on the list 23 Fun Facts You Should Know About Octopuses
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Octopuses are able to change the color of their entire body in three-tenths of a second. All cephalopods have skin that has three layers. The top outermost layer contains cells called chromatophores, which detect signals from underlying nerves and muscles and change color accordingly. Chromatophores contain red, orange, yellow, brown, and black pigments surrounded by muscles. The middle layer contains mirror-like cells called iridophores that instantaneously reflect the brightness of the animal's environment. This is not thought to be conscious; in fact, cephalopods are believed to be colorblind! The bottom layer of skin contains white cells that provide contrast to the colors and patterns of the outer layers. 

Source: Live Science

Octopus's Arms Even React When Severed


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In some experiments, arms severed from an octopus's body jerked away when researches pinched them. This is because two-thirds of an octopus's neurons reside in its arms rather than in its brain.

Source: Smithsonian