NOAA, Smithsonian Identify 3,250-Meter Golden Orb as Relicanthus daphneae Remains
Updated
Updated · SciTechDaily · May 18
NOAA, Smithsonian Identify 3,250-Meter Golden Orb as Relicanthus daphneae Remains
4 articles · Updated · SciTechDaily · May 18
Scientists said the “golden orb” recovered in 2023 from 3,250 meters down in the Gulf of Alaska was the dead basal tissue of a giant deep-sea anemone, Relicanthus daphneae.
DNA barcoding initially failed, so NOAA and Smithsonian researchers combined microscopy with whole-genome and mitochondrial sequencing to match the specimen to a known reference genome.
Fibrous layered tissue and spirocysts — stinging cells found only in Hexacorallia — narrowed the mystery object from egg case or sponge to a cnidarian, while a similar 2021 specimen showed the same structures.
The finding closes a two-year puzzle that drew public speculation after NOAA’s Deep Discoverer spotted the smooth golden mound attached to a rock, and underscores how much deep-ocean life remains unidentified.
The golden orb was once a giant anemone. What other biological wonders remain hidden in the abyss?
If advanced genetics were needed for one golden orb, how will we identify countless other deep-sea mysteries?
How does solving the golden orb mystery impact the urgent debate on deep-sea mining?