Golf Ball-Sized Blue Octopus Discovered in Galápagos Deep Sea

By Daniel Rivera · May 25, 2026

A Brilliant Blue Discovery in the Deep

Scientists have officially described a remarkable new octopus species discovered in the deep waters near the Galápagos Islands. Microeledone galapagensis, a tiny bright-blue octopus small enough to fit in your palm, was found at approximately 5,800 feet below the ocean surface.

The diminutive creature was first encountered in 2015 during a deep-sea expedition aboard the research vessel E/V Nautilus. While piloting a remotely operated vehicle (ROV) along the ocean floor near Darwin Island, biologists spotted the octopus's vibrant blue coloration standing out against the underwater mountainslope.

"Is that a cute little guy, or what?" one researcher can be heard saying in the ROV recording, according to reports.

Revolutionary Scientific Techniques

The team successfully collected the specimen and recorded footage of two others during their expedition. However, identifying whether this was a new species presented a significant challenge. Traditional species identification typically requires a full autopsy that destroys the specimen—a problem when dealing with the only collected example of a potentially new species.

Field Museum octopus expert Janet Voight, a study co-author, immediately recognized the specimen's uniqueness. "Right away, I knew it was something really special. I'd never seen anything like it," she recalled in a statement.

The solution came through micro-computer tomography (CT) scanning technology. Working with Field Museum X-ray CT laboratory manager Stephanie Smith, the research team compiled thousands of thin X-ray images into detailed 3D models of the octopus's anatomy.

Preserving Precious Specimens

"Because CT imaging is non-destructive, it's especially important for type specimens like this one," explained Smith, who is also a study co-author. "And that's great for me because people are often bringing me these incredibly rare and stunningly beautiful specimens that I get the privilege of virtually opening up."

After years of careful analysis, the team confirmed that the octopus belonged to a novel species deserving its own scientific name. The discovery represents the first octopus species officially described by Voight in her over 40-year career.

Deep-Sea Mysteries Continue

The Galápagos Islands continue to surprise scientists with new species discoveries, even decades after Charles Darwin's famous visit. The deep-sea environment around these biodiversity hotspots remains largely unexplored, harboring creatures that are rarely seen and poorly understood.

"These are little octopuses that live in the deep sea, and hardly anybody on Earth has ever gotten to see them," Voight noted. "I just feel lucky that I got to work with them."

Study co-author Salome Buglass from UCLA emphasized the value of such discoveries: "Getting the specimen to Janet was a long process, but one I would gladly repeat if it means getting to know the most precious parts of our ocean just a little bit better."

Technology Transforming Marine Science

This discovery highlights how advanced imaging technology is revolutionizing taxonomy and conservation science. Non-destructive CT scanning allows researchers to study rare and fragile specimens without losing valuable scientific material—particularly crucial when dealing with deep-sea creatures that may be extremely difficult to find again.

The research, published in the journal Zootaxa, demonstrates the ongoing importance of deep-sea exploration in understanding Earth's biodiversity. As technology continues to advance, scientists expect to uncover more hidden treasures in the ocean's depths, each offering new insights into the remarkable diversity of life on our planet.