Scientists discover new deep-sea blue octopus species in Galápagos

Never had seen anything like it—a creature from the deep that science had overlooked
Janet Voight's reaction upon seeing the first photograph of the newly discovered octopus species.

En las profundidades oscuras del océano que rodea las Galápagos, un archipiélago que ya transformó una vez nuestra comprensión de la vida en la Tierra, los científicos han confirmado el hallazgo de una nueva especie de pulpo azul del tamaño de una pelota de golf, bautizada como Microeledone galapagensis. El animal fue avistado en 2015 a casi 1.800 metros de profundidad cerca de la isla Darwin, pero solo ahora, gracias a la tomografía computarizada que permitió examinar su anatomía sin destruir el único ejemplar existente, la ciencia puede certificar su singularidad. El descubrimiento no habla solo de una criatura diminuta: habla de la vastedad de lo que aún ignoramos y de la fragilidad de los ecosistemas que aún no hemos aprendido a ver.

  • Un vehículo submarino teledirigido captó en 2015 una criatura azul y diminuta a 1.768 metros de profundidad en las Galápagos, pero nadie supo entonces exactamente qué era.
  • Con un único ejemplar preservado en alcohol y formalina, los científicos se enfrentaban a un dilema clásico: disectar significaba destruir la única prueba de una posible nueva especie.
  • La solución llegó desde la tecnología médica: miles de cortes de tomografía computarizada construyeron un modelo tridimensional del animal sin tocar su cuerpo, revelando órganos y estructuras únicas.
  • La confirmación llegó más de una década después del avistamiento: Microeledone galapagensis es oficialmente una especie desconocida para la ciencia, nombrada en honor al archipiélago que la albergaba en secreto.
  • El hallazgo subraya que las profundidades marinas de las Galápagos siguen siendo en gran medida un territorio inexplorado, y renueva el llamado urgente a proteger lo que todavía no somos capaces de ver ni de nombrar.

A mil kilómetros de la costa de Ecuador, en 2015, un vehículo submarino operado a distancia descendía lentamente por las aguas oscuras cerca de la isla Darwin, en el archipiélago de las Galápagos. A 1.768 metros de profundidad, la tripulación del E/V Nautilus, en colaboración con la Fundación Charles Darwin y el Parque Nacional Galápagos, encontró algo inesperado: una criatura azul, más pequeña que una pelota de golf, que no se parecía a nada conocido.

El ejemplar fue trasladado a la Estación Científica Charles Darwin, donde los investigadores contactaron a Janet Voight, experta en cefalópodos del Field Museum de Chicago. Su reacción al ver la fotografía fue inmediata: nunca había visto nada igual. El animal fue preservado y enviado a Chicago para un análisis más profundo.

Allí surgió un problema delicado: describir una nueva especie exige examinar cada detalle anatómico, pero solo existía un ejemplar. Disecarlo habría significado destruir la única evidencia. La solución fue recurrir a la tomografía computarizada: miles de imágenes en sección transversal construyeron un modelo digital tridimensional del animal, revelando su arquitectura interna sin realizar una sola incisión. Los resultados fueron concluyentes, y la especie fue bautizada como Microeledone galapagensis.

El anuncio llegó esta semana, más de diez años después del avistamiento original. Más allá del hallazgo en sí, el descubrimiento recuerda que el océano profundo que rodea las Galápagos permanece en gran parte inexplorado. En estas mismas islas, en el siglo XIX, Darwin observó las variaciones entre pinzones y tortugas que darían forma a su teoría de la evolución. Lo que aún aguarda en las aguas que las rodean podría ser igualmente revelador.

A thousand kilometers off the coast of Ecuador, in waters that belong to one of the planet's most carefully protected natural laboratories, a robot descended into darkness. It was 2015, and the remotely operated vehicle—a mechanical eye on a tether—was exploring the seafloor near Darwin Island in the Galápagos archipelago, moving slowly across the bottom at a depth of 1,768 meters. The crew aboard the E/V Nautilus, working in collaboration with the Charles Darwin Foundation and the Galápagos National Park Authority, was hunting for the unknown. What they found was smaller than a golf ball and the color of deep water.

The octopus was brought to the surface and delivered to the Charles Darwin Research Station, where scientists began the work of cataloging what the expedition had pulled from the abyss. When researchers there encountered the tiny blue creature, they knew something was different. They reached out to Janet Voight, a cephalopod expert at the Field Museum in Chicago, sending her a photograph. Voight's response was immediate: she had never seen anything like it. The specimen was preserved in alcohol and formalin, then shipped to Chicago for closer examination.

Here the investigation faced a practical problem. Describing a new species of octopus requires examining every anatomical detail—the mouth, the beak, the teeth—but Voight had only a single specimen. To dissect it would be to destroy the only evidence of what might be a previously unknown creature. Instead, she partnered with Stephanie Smith, who manages the Field Museum's CT scanning laboratory, to image the animal using X-ray tomography. The technology compiled thousands of cross-sectional scans into a three-dimensional digital model, revealing the octopus's internal architecture without a single incision.

Through those scans, the researchers could see the fine details of the animal's organs, its mouth, its distinctive features. The evidence was clear: this was a species unknown to science. They named it Microeledone galapagensis. The discovery was announced this week, more than a decade after the creature was first spotted in the dark.

What makes the finding significant is not just that a new species exists—it is that it exists in a place we have barely begun to explore. The deep ocean around Galápagos remains largely unmapped, largely unseen. Salome Buglass, a marine scientist at the University of California and former researcher with the Charles Darwin Foundation, noted that each new species discovered in these hidden ecosystems helps us understand them better and reminds us why protection matters. The archipelago itself has long served as a natural laboratory for understanding life on Earth—it was here, in the nineteenth century, that Charles Darwin observed the variations among finches and tortoises that would eventually shape his theory of evolution. What remains to be discovered in the waters around these islands may be equally profound.

Immediately knew it was something really special. Never had seen anything like it.
— Janet Voight, Field Museum cephalopod expert
These discoveries remind us how much of the deep ocean in Galápagos remains unexplored. Each new species helps us understand these hidden ecosystems and why protecting them matters.
— Salome Buglass, marine scientist at University of California
A Conversa do Hearth Outra perspectiva sobre a história
Inventor

Why does finding one small octopus matter enough to announce it to the world?

Model

Because it tells us something we didn't know existed. And because it exists in a place we've barely looked. The deep ocean around Galápagos is still mostly unexplored—we know more about the surface of the moon than we know about those waters.

Inventor

But couldn't there be thousands of unknown species down there?

Model

Almost certainly. Every time we look, we find something new. This octopus is just the one we happened to see in 2015 and managed to bring back intact.

Inventor

Why was it so hard to study? It's just a small animal.

Model

Because they had only one specimen. If you cut it open to examine the mouth and teeth, you destroy the only evidence that this species exists. So they used CT scanning instead—essentially taking thousands of X-ray slices and reassembling them digitally. It let them see everything without touching it.

Inventor

That sounds like a workaround. Why not just collect more specimens?

Model

Because it lives at 1,768 meters down, in an environment we can barely access. Finding it once was luck. Finding it again would be much harder. And there's another reason: Galápagos is a protected area. You can't just go down and collect whatever you want.

Inventor

So what happens now?

Model

Now we know it's there. We know what it looks like inside. And we know that the deep ocean around these islands still has secrets. That knowledge itself is valuable—it tells us what we need to protect.

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