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(#21) Octopuses Were Some of the First Invertebrates to Be Seen Using Tools
Octopuses were the first invertebrates to be seen using tools. For example, some select and carry coconut shells to use as camouflage and shelter that protects them from predators.
Source: OneKind -
(#9) Octopuses Love Being Alone
Usually, octopuses only get together for mating season. They prefer to be alone. In fact, because they are feisty and competitive, octopuses in captivity are generally kept in separate tanks. In public aquariums, young octopuses are often raised behind glass dividers of other animals on display.
Source: Facts Legend -
(#4) Octopuses Have Blue Blood
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 -
(#16) Octopuses See the Same Thing Regardless of Body Position
Octopuses are able to keep their eyes in the same orientation regardless of their body position. Sensory receptors called statocysts keep the pupils balanced as the octopus moves, which allows it to see the same whether it upside down or right-side up. It also has horizontal pupils, while humans have vertical ones.
Source: Mental Floss -
(#20) Octopuses Are Very Fast Swimmers
Octopuses are able to jet themselves forward by expelling water through their mantles. This makes them incredibly fast swimmers.
Source: OneKind -
(#15) Octopuses Have Hidden Beaks
Each octopus has a beak completely hidden inside its head. The beak is made of keratin, the same stuff that makes up human hair and fingernails. An octopus can not show its beak, but uses it to deliver venom to its prey and to crush crabs and mollusks.
Source: Distractify
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About This Tool
Octopuses are extremely complex, mysterious, and talented creatures with many hidden talents. These invertebrate but colorful marine animals have existed for thousands of years, making the ocean world interesting. They are masters of defense and able to disguise their entire body in seconds, due to the lack of a skeleton, they are very agile and can even grow their lost arms.
For centuries, their unique defense mechanism has fascinated biologists. Various octopuses are widely distributed in tropical and temperate waters around the world. The random tool introduced 21 fun facts about octopuses that most people may not know.
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