Level 1 - Absolute Beginner

Scientists found a new kind of octopus near the Galapagos Islands. The octopus is very small. It is about the size of a golf ball.

The octopus is blue. Blue is a very rare color for animals. Scientists gave it the name Microeledone galapagensis.

They found the octopus very deep in the ocean. It was almost 6,000 feet below the water. That is very deep.

Scientists used a special underwater robot to see the octopus. They also used a special camera to look inside it without cutting it open.

octopus

a sea animal with eight arms and a soft body

species

a group of animals or plants that are the same type

deep ocean

the very bottom part of the sea where very little light reaches

rare

not common; found only sometimes

robot

a machine that can move and do tasks automatically

scientist

a person who studies nature and the world to learn new things

discovered

found something that was not known before

island

a piece of land surrounded by water

Level 2 - Elementary

Scientists have officially named a new octopus species called Microeledone galapagensis. It was found near Darwin Island in the Galapagos Islands at a depth of 1,773 meters, which is nearly 6,000 feet below the sea surface.

The tiny creature is about the size of a golf ball and has a striking blue color. Blue is considered the rarest color in nature. The octopus was first spotted in 2015 during an expedition on the research vessel E/V Nautilus, using a remotely operated underwater vehicle.

Lead researcher Janet Voight, from the Field Museum in Chicago, formally described the species in the journal Zootaxa on May 25, 2026. The discovery was made in partnership with the Charles Darwin Foundation and the Galapagos National Park.

Instead of cutting the octopus open, scientists used CT scanning to take thousands of X-ray images. These were combined to create a detailed three-dimensional model of the animal, preserving it intact for future study.

expedition

an organized journey to explore or study a place

remotely operated vehicle

an underwater robot controlled from a ship above the ocean surface

CT scanning

a medical and scientific imaging technique that uses X-rays to create three-dimensional pictures of an object

formally described

officially named and documented in a scientific publication

specimen

an example of a plant or animal collected for scientific study

intact

complete and not damaged or cut open

striking

noticeably unusual or impressive in appearance

depth

the measurement of how far something is below the surface

Level 3 - Intermediate

A decade-long mystery has been resolved with the formal description of Microeledone galapagensis, a new species of deep-sea octopus found near Darwin Island in the Galapagos archipelago at a depth of 1,773 meters. The creature, roughly golf-ball-sized and exhibiting a vivid blue coloration, was first captured on video in 2015 by the remotely operated vehicle aboard the exploration vessel E/V Nautilus during a survey mission in partnership with the Charles Darwin Foundation and the Galapagos National Park Directorate.

Lead author Janet Voight, curator emerita of invertebrates at the Field Museum in Chicago, published the species description in the journal Zootaxa on May 25, 2026, confirming it is a member of the genus Microeledone, a group of small deep-sea octopuses previously known primarily from Pacific and Antarctic waters. Crucially, it is the first deep-sea octopus recorded from the eastern equatorial Pacific, extending the known range of the genus significantly northward.

Rather than dissecting the single preserved specimen, Voight and her team employed high-resolution CT scanning to generate thousands of X-ray cross-sections, which were computationally assembled into a complete three-dimensional anatomical model. This non-destructive approach allowed the team to study internal organs, muscle attachments, and chromatophore distribution while keeping the holotype intact for future researchers.

The discovery underscores how much of the deep ocean remains uncharted. Voight noted that M. galapagensis was stumbled upon almost accidentally, near an underwater seamount during what was primarily a geological survey. Scientists estimate that more than 90 percent of deep-ocean animal life has yet to be formally described, a statistic given renewed urgency by proposals to begin deep-sea mining in ecologically sensitive habitats.

holotype

the single specimen used as the official reference when a species is first formally described

genus

a biological classification grouping species that share close evolutionary relationships

chromatophore

pigment cells in the skin of cephalopods that control color and pattern

seamount

an underwater mountain rising from the ocean floor

non-destructive analysis

scientific examination techniques that do not damage or alter the specimen

archipelago

a group of islands, often of volcanic or tectonic origin

anatomical model

a three-dimensional representation of the structures inside a living organism

deep-sea mining

the extraction of mineral resources from the ocean floor, often controversial due to environmental impact

Level 4 - Advanced

The formal description of Microeledone galapagensis in the journal Zootaxa on May 25, 2026, by Field Museum curator emerita Janet Voight and colleagues, adds a new branch to the circumpacific phylogeny of the genus Microeledone and establishes the first confirmed deep-sea octopod record for the eastern equatorial Pacific. The holotype, a single female specimen approximately 35 mm mantle length and preserved in 70 percent ethanol and 10 percent formalin, was recovered from a depth of 1,773 meters near Darwin Island during the 2015 E/V Nautilus expedition organized jointly with the Charles Darwin Foundation and the Galapagos National Park Directorate.

The naming resolves a decade-long limbo in which the specimen, clearly anomalous in its vivid blue integumental coloration and its divergence from the morphological characters of known Microeledone congeners, had been held pending adequate comparative material. Blue coloration in cephalopods is highly unusual; in most species it arises transiently from iridophores or haemocyanin under stress rather than as a stable, constitutive trait, making M. galapagensis's apparent persistent blue hue a physiologically intriguing character that Voight flags for future investigation.

Methodologically, the study represents a trend toward non-destructive taxonomy in invertebrate systematics. The team used micro-CT scanning at 12-micron voxel resolution to capture thousands of serial cross-sections, which were digitally stacked into a full three-dimensional volumetric model. This approach preserved chromatophore and sucker morphology, gill lamellae counts, and hectocotylus arm structure in a form accessible to any researcher worldwide via open-access download, a significant advance over traditional type-specimen access constraints.

The discovery arrives at a politically consequential moment for deep-ocean governance. Proposals under the International Seabed Authority to authorize commercial nodule mining in the Clarion-Clipperton Zone and adjacent Pacific seamount fields have renewed scientific and civil-society urgency around baseline biodiversity surveys. Voight's team notes that M. galapagensis was encountered only because the ROV happened to pass over the relevant seamount flank; systematic trawling would likely have missed an animal of this size, underscoring that acoustic and optical ROV surveys, rather than bulk sampling, are now the irreplaceable frontier tool for deep-sea discovery.

circumpacific phylogeny

the evolutionary family tree of organisms distributed around the Pacific Ocean basin

iridophores

reflective pigment cells in cephalopod skin that produce iridescent or structural colors

haemocyanin

the copper-based oxygen-carrying protein in cephalopod blood that gives it a blue color under certain conditions

micro-CT scanning

high-resolution X-ray computed tomography capable of imaging structures at micron-scale detail