The striking organism, characterized by its bright yellow, branching, tree-like appearance, was found thriving at depths ranging from 360 to 529 meters below the surface of the Pacific Ocean. Measuring over a meter tall in some established colonies, the coral stood out against the deep-sea floor in a way that immediately captured the attention of the marine biologists and researchers onboard. The detailed findings regarding this unique biological discovery have been officially published in the open-access scientific journal ZooKeys.
The specimens that made this classification possible were collected during deep-sea expeditions conducted in 2019 and 2023. Researchers utilized the advanced capabilities of SuBastian, a remotely operated vehicle (ROV) capable of withstanding the immense pressures of the deep sea. The operations were launched aboard the specialized research vessels Falkor and Falkor (too), which are owned and operated by the Schmidt Ocean Institute. These targeted expeditions focused heavily on exploring the submerged seamounts located near Isla del Coco, as well as broader underwater formations stretching along Costa Rica’s active Pacific margin.
A Golden Coral Among Fields of Stars
During the underwater surveys, researchers observed that the coral was particularly abundant on steep rocky outcrops. In these specific zones, brittle stars carpeted nearly every available square inch of the hard substrate. Against this shimmering, star-like backdrop of echinoderms, the vibrant yellow branches of the newly discovered coral appeared to rise from the dark seafloor like glowing trees surrounded by countless distant stars.
This unusual and striking visual scene directly inspired the scientific nomenclature chosen for the organism. The new genus has been designated as Laurinque, a term derived directly from "Laurinquë," which translates to "golden tree" in Quenya—the fictional Elvish language meticulously constructed by legendary author J.R.R. Tolkien for his epic works The Lord of the Rings and The Silmarillion. The researchers selected this specific name to honor the coral’s vivid, luminescent yellow coloration and its intricate, branching architecture.
Complementing the genus name, the species has been named elenya, which translates to "stellar" or "of the stars" in the same Quenya tongue. This species designation pays direct homage to the dense populations of brittle stars that blanketed the surrounding environment, creating a visual ecosystem where the coral and its neighbors existed in harmony. Together, the chosen genus and species names capture what the scientific team described as an almost mystical, Tolkien-inspired landscape situated deep on the ocean floor, far beyond the reach of sunlight.
DNA Reveals a New Coral Family
While the physical appearance of the coral immediately marked it as something special, determining its exact position on the evolutionary family tree proved to be a far more complicated scientific endeavor than initially anticipated. When the research team first brought samples back for laboratory analysis, they began by sequencing three standard genes that are commonly utilized by marine biologists to identify and classify octocorals.
However, the initial genetic data yielded puzzling and contradictory results. Instead of pointing cohesively toward a single established group or family, each of the three tested genes suggested a completely different and unrelated coral family.
Facing these unusually inconsistent molecular indicators, the researchers realized that standard single-gene testing was insufficient for such a unique specimen. They turned instead to phylogenomics—an advanced methodology that involves comparing hundreds of genes simultaneously to construct a comprehensive and accurate evolutionary history. This broad and exhaustive genetic analysis finally cleared away the confusion and clarified the coral’s true evolutionary lineage.
The comprehensive genomic data revealed that the species did not fit neatly into any previously recognized coral family known to science. Instead, it represents an entirely distinct evolutionary lineage. While scientists found that it is most closely related to the family Eunicellidae, both its genetic blueprint and its underlying anatomical features diverge significantly enough to justify the creation of an entirely new taxonomic family, which has been named Laurinqueidae. Furthermore, researchers established the new genus Laurinque specifically to house this singular species.
Reflecting on the unexpected journey of discovery, Dr. Odalisca Breedy of the Universidad de Costa Rica, who served as the lead researcher on the study, shared her perspective on the findings.
"I saw the octocoral garden for the first time in 2019 and I was impressed by the beauty of the landscape, which inspired, later the elvish name of the taxa," Dr. Breedy said. "I thought the species could belong to a known family and genera, but after the preliminar morphological analysis I realised that it was something very different that I could not match with the known taxa."
Dr. Breedy noted that the subsequent milestones in the research required specialized collaboration. "In 2023 we collected more samples and thanks to the exhaustive molecular analyses made by my colleagues, Cathy McFadden, Catalina Murillo and Andrea Quattrini, we were able to determine the taxonomic placement of the stunning species, in one of the most enigmatic sites."
Costa Rica’s Deep Sea Still Holds Surprises
Dr. Breedy led the successful research initiative alongside a diverse international team of scientific collaborators. The field expeditions were made possible through the dedicated support of the Schmidt Ocean Institute, supplemented by a vital research grant provided by the National Geographic Society.
This newly classified coral family joins an expanding catalog of previously undocumented and unclassified species that have been discovered during recent scientific surveys of Costa Rica’s deep-sea seamounts. The ongoing discoveries underscore just how much of the deep ocean remains entirely unexplored and poorly understood by modern science, despite the fact that marine environments cover roughly two-thirds of the Earth’s total surface area.
Marine biologists emphasize that complex coral gardens like the one discovered off Costa Rica’s coast function as vital and vulnerable marine ecosystems. The intricate, three-dimensional physical structures created by these coral colonies provide essential shelter, feeding grounds, and breeding habitats for a wide array of other deep-sea organisms. Because of this, they act as crucial centers of biological diversity within deep-ocean environments that scientists are only just beginning to map, observe, and comprehend.
