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Tiny Blue Octopus Named Microeledone Galapagensis Found Near Galápagos

Researchers described the species from a single female using high‑resolution micro‑CT scans to preserve the specimen and to point to unanswered questions about deep‑sea dispersal.

Overview

  • Scientists formally described Microeledone galapagensis in May 2026 based on a female collected and video of two others from a deep‑sea ROV survey near Darwin Island.
  • The animals were first filmed and one specimen collected during a July 2015 E/V Nautilus dive at about 1,773–1,800 meters depth.
  • The octopus is roughly golf‑ball sized, pale blue on top and dark violet below, with short 3–4 cm arms bearing about 30 suckers in a single row.
  • Researchers used thousands of micro‑CT scans to build a 3‑D anatomical model instead of dissecting the only specimen, which revealed internal features including an ovary with 13 eggs.
  • The species most closely resembles an octopus off Uruguay, a surprising biogeographic link that the authors say requires more specimens and genetic data to explain and highlights how ROV archives expand deep‑sea discovery.