When we think of the smartest animals on Earth, our minds usually fly to chimpanzees, dolphins, or crows. Yet, deep in the ocean lives a creature that challenges everything we know about biology and evolution: the octopus.
Often described by scientists as the closest thing to an "alien" on Earth, this cephalopod possesses a unique nervous system capable of solving complex puzzles, camouflaging in fractions of a second, and, as a viral experiment recently proved, even learning to play a melody on the piano.
A Distributed Brain: Nine Minds in One Body
The true magic of the octopus lies in the structure of its nervous system. Unlike vertebrates, where a central brain coordinates every single movement, the octopus adopted a completely different evolutionary strategy: decentralization.
The Central Brain: Located between its eyes and shaped like a donut, it handles high-level decisions, long-term memory, and emotions.
The Peripheral Brains (The Arms): An octopus possesses about 500 million neurons, but more than two-thirds are located in its tentacles. Each arm has a sort of independent "mini-brain."
Total Autonomy: This means a tentacle can smell, touch, taste, and decide how to move or grab prey without waiting for a signal from the central brain. It is as if the octopus has nine brains working in perfect harmony.
Scientific Fact: If an arm is severed (for example, during a predator attack), it will continue to move and react to external stimuli for hours because it possesses an autonomous neuronal network.
Thanks to this biological hardware, octopuses display astonishing problem-solving skills in marine biology studies, such as using tools (like coconut shells for armor), escaping aquariums, and even recognizing individual human faces. But how far can this intelligence actually go?
From a Fish Market to Music: The True Story of Taco the Piano-Playing Octopus
In the incredible YouTube Short by @MattiasKrantz (image_404d7e.jpg), titled "I taught an octopus piano (it took 6 months)", we witness an extraordinary experiment that completely redefines the limits of animal learning.
The star of the video is Taco, an octopus that the creator literally saved from a fish market in South Korea—where he was destined for a frying pan—and welcomed into his aquarium instead. After a few days of gaining his trust through food, a rigorous 6-month training process began.
Here are the fascinating phases of how Taco learned to play:
1. The Key Redesign Dilemma
In the beginning, Taco would touch the keyboard but couldn't actually play a note. The creator realized a fundamental biological limitation: pushing down is not a natural movement for an octopus. He had to redesign the keys over and over again until he created the ultimate "octopus key"—a modified setup that Taco could grip and pull toward himself with his suction cups. It worked instantly.
2. Ditching the Lights for Movement
The next step was teaching Taco an actual melody. The initial plan involved using LED lights to show Taco which key to pull, but the octopus completely hated and ignored the lights. The fix was simple: just wiggling and shaking the correct key in front of him. Stimulated by the movement, Taco learned to play two notes in a row within a week, and by the second week, he pulled off a full musical chord.
3. The Masterstroke: The Crab Elevator
After the early success, progress stalled for weeks. Taco knew how to play individual notes but didn't grasp that he needed to keep going to complete a full song.
After researching and consulting with experts, the creator invented a genius motivational tool: the crab elevator. He rigged a mechanism where a crab (the octopus's absolute favorite food) sat on a small platform high up. Every correct key press lowered the crab a little closer to Taco. To get the food, Taco had no choice but to complete the entire musical melody.
The Grand Finale: Taco's First Performance
The crab elevator worked flawlessly. Taco perfectly understood the abstract, logical connection between executing the music and receiving his prize. The video concludes with Taco's first-ever official piano recital, beautifully coordinating his peripheral mini-brains to glide his tentacles across the keys and complete the tune.
This transition from a South Korean fish market to a musical performance is not just a heartwarming viral story—it is a vivid, visual proof of the mind-bending neural plasticity of the octopus. It proves that an animal evolutionarily distant from humans can completely adapt its nine brains to an artificial, human instrument to achieve its goals.
Look at the video: