Scientists have finally identified a mysterious "golden orb" discovered almost three years ago in the Gulf of Alaska. The object, found at a depth of more than three kilometers, is not an egg, a sponge, or an alien remnant, as some had speculated. Instead, researchers believe it is the base of a giant deep-sea cnidarian known as Relicanthus daphneae.
A Complex Mystery Solved
The orb was first spotted by the National Oceanic and Atmospheric Administration (NOAA) in 2023 using a remotely operated vehicle called Deep Discoverer, launched from the Okeanos Explorer. Deep-sea researchers often encounter mysterious objects, but this particular find required extensive investigation.
"We work on hundreds of different samples and I suspected that our routine processes would clarify the mystery," said Allen Collins, a zoologist and director of the NOAA Fisheries' National Systematics Laboratory. "But this turned into a special case that required focused efforts and expertise of several different individuals. This was a complex mystery that required morphological, genetic, deep-sea and bioinformatics expertise to solve."
Identification Through Genetic Analysis
Sequencing the mitochondrial genomes of the golden orb revealed that it was almost identical to Relicanthus daphneae, an extremely rare species. These aquatic invertebrates, similar to coral or anemones, are typically found at depths between 1,200 and 4,000 meters. The rest of the animal likely died, which explains why the six tentacles or polyps commonly seen in this species were not visible on the orb.
Significance of the Discovery
Captain William Mowitt, the current acting director of NOAA Ocean Exploration, emphasized the importance of such discoveries. "This is why we keep exploring — to unlock the secrets of the deep and better understand how the ocean and its resources can drive economic growth, strengthen our national security, and sustain our planet."
The identification of the golden orb highlights the value of continued deep-sea exploration and the collaborative effort required to solve complex biological mysteries. The findings contribute to our understanding of deep-sea ecosystems and the rare species that inhabit them.
