Once In A Blue Moon


Octopuses are intriguing and enigmatic creatures that inhabit the world’s oceans, captivating both scientists and enthusiasts alike. With their unique abilities, astounding behaviors, and otherworldly appearance, octopuses continue to pique our curiosity. In this article, we’ll delve into 10 odd but true facts about these remarkable cephalopods.

  1. Three Hearts and Blue Blood

One of the most unusual features of octopuses is their circulatory system. They possess three hearts: two pump blood to the gills, while the third circulates oxygenated blood throughout the rest of the body. Adding to their uniqueness, octopus blood is blue due to a copper-based molecule called hemocyanin that binds to oxygen, unlike the iron-based hemoglobin in human blood.

  1. Color-Changing Masters

Octopuses are masters of disguise. Specialized cells called chromatophores in their skin enable them to change color, texture, and even pattern in a matter of seconds. They can blend seamlessly with their surroundings, making them almost invisible to predators and prey alike.

  1. Brainpower Beyond the Beak

Octopuses have a highly developed nervous system and complex brains. In fact, about two-thirds of their neurons are located in their arms, which grants these appendages remarkable flexibility and coordination. Octopuses can independently control each arm’s movement, allowing them to perform intricate tasks simultaneously.

  1. Escape Artists Extraordinaire

Known for their remarkable intelligence, octopuses have earned a reputation as escape artists. Some species are capable of squeezing through incredibly small openings and even disassembling parts of their enclosures to make their getaway. This behavior has baffled and astonished researchers for years.

  1. Boneless Wonders

Octopuses are boneless creatures. They lack an internal or external skeleton, which grants them an extraordinary ability to squeeze into incredibly tight spaces. This bonelessness also contributes to their remarkable flexibility and adaptability.

  1. Inking for Survival

One of the most well-known defense mechanisms of octopuses is the release of ink. When threatened, an octopus expels a cloud of dark ink that creates a smokescreen, allowing it to escape from predators. The ink’s main component is melanin, which gives it its dark color.

  1. Short but Intense Lifespan

Octopuses have relatively short lifespans, ranging from as little as six months to a few years, depending on the species. Mating and reproduction signal the end of their lives, as they put all their energy into caring for their eggs until they hatch. The remarkable dedication these creatures show to their offspring is both fascinating and endearing.

  1. Problem-Solving Prodigies

Numerous studies have demonstrated octopuses’ incredible problem-solving abilities. They exhibit curiosity and are known to manipulate objects in their environment to achieve desired outcomes. From opening jars to navigating mazes, their cognitive prowess continues to amaze researchers.

  1. Complex Social Lives

Although octopuses are often thought of as solitary creatures, some species exhibit surprisingly complex social behaviors. For instance, the larger Pacific striped octopus engages in mating rituals involving intricate dances and displays. However, social behaviors in octopuses are not as well-understood as in other animals, making this area of research particularly intriguing.

  1. Regeneration Wonders

Octopuses have the remarkable ability to regenerate lost limbs. If an octopus loses an arm, it can regrow a new one over time. The regenerated limb may even exhibit slight differences from the original, indicating a fascinating level of biological adaptation.


Octopuses are undoubtedly some of the most captivating and enigmatic creatures in the ocean. From their three hearts to their boneless bodies, color-changing abilities, and incredible intelligence, they continue to amaze researchers and enthusiasts alike. As scientists delve deeper into the mysteries of these cephalopods, we can look forward to uncovering even more odd but true facts about these fascinating marine creatures.

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