The organism, characterized by a striking bright yellow color and a branching, tree-like physical structure, was identified between 360 and 529 meters below the ocean’s surface. Its genetic makeup and physical features proved to be so profoundly distinctive that researchers had no choice but to create an entirely new taxonomic family to properly classify it. The groundbreaking findings were recently detailed in the open-access scientific journal ZooKeys, shedding fresh light on the biodiversity hidden away in the planet’s vast and poorly understood underwater ecosystems.
Some colonies of this newly discovered deep-sea marvel grow to more than a meter in height, creating sweeping underwater gardens along rugged terrain. Researchers were able to collect physical specimens of the coral using the advanced remotely operated vehicle SuBastian during two separate deep-sea expeditions conducted in 2019 and 2023. These scientific missions were carried out aboard the specialized research vessels Falkor and Falkor (too), both of which are owned and operated by the Schmidt Ocean Institute. During these deployments, marine scientists focused their efforts on exploring uncharted seamounts located near Isla del Coco and stretching along Costa Rica’s active Pacific margin.
A Golden Coral Among Fields of Stars
The newly identified coral was found to be especially abundant on rocky oceanic outcrops where dense carpets of brittle stars covered nearly every available inch of the substrate. Against this shimmering, star-like backdrop, the vivid yellow branches of the coral appeared to rise from the dark, cold seafloor like glowing trees surrounded by constellations.
This unusual and breathtaking scene played a direct role in inspiring the scientific name given to the discovery. The new genus, Laurinque, is derived from the term "Laurinquë," which translates to "golden tree" in Quenya, an Elvish language invented by renowned author J.R.R. Tolkien for his legendary mythos in The Lord of the Rings and The Silmarillion. Researchers deliberately selected the moniker because it perfectly captures the coral’s brilliant, sun-like yellow pigmentation and its intricate, arboreal growth pattern.
Meanwhile, the organism’s species name, elenya, means "stellar" or "of the stars" in the same Elvish tongue. This choice of nomenclature directly references the dense, shimmering populations of brittle stars that blanket the seafloor and surround the coral colonies. Together, the genus and species names evoke what the participating researchers described as an almost mystical, fantasy-inspired landscape existing quietly on the deep ocean floor far beyond the reach of sunlight.
DNA Reveals a New Coral Family
While discovering a visually striking organism is always a major milestone for marine biology, determining precisely where the coral fit on the complex evolutionary family tree proved to be a far more complicated challenge than the scientists initially expected. When the research team first began the classification process, they sequenced three standard genes that are commonly relied upon by marine biologists to identify and categorize various groups of corals.
However, instead of pointing toward a single, cohesive group, the genetic sequencing yielded conflicting signals. Each of the three genes suggested an entirely different and unrelated family, leaving the researchers with a puzzling scientific anomaly.
Because those preliminary results were unusually inconsistent, the scientific team turned to a more advanced and comprehensive technique known as phylogenomics. This sophisticated method allows researchers to compare hundreds of genes simultaneously, providing a much wider and clearer lens through which to examine evolutionary history. The broader genetic analysis finally cut through the confusion and clarified the coral’s exact evolutionary position.
The results of the phylogenomic analysis demonstrated definitively that the species does not belong to any previously recognized coral family known to science. Instead, it represents a distinct, standalone evolutionary lineage. While it is most closely related to the family Eunicellidae, its underlying genetics and internal anatomy differ enough to justify the creation of an entirely new family, which has been named Laurinqueidae. Alongside this major classification, the researchers also established the new genus Laurinque specifically to house the species.
Dr. Odalisca Breedy of the Universidad de Costa Rica, who served as the lead researcher on the study, reflected on the long and surprising journey of discovery.
"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 puzzle was ultimately solved thanks to continued fieldwork and advanced technology. "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 intricate study alongside a dedicated international team of scientific collaborators. Financial and logistical support for the expeditions was provided by the Schmidt Ocean Institute, with additional backing coming from a research grant awarded by the National Geographic Society.
This latest find adds to a rapidly growing list of previously undocumented species that have been discovered during recent scientific surveys of Costa Rica’s rugged underwater seamounts. It also serves as a stark reminder of how much of Earth’s deep ocean remains poorly explored and entirely mysterious, even though deep-sea environments cover roughly two-thirds of the planet’s total surface area.
Marine biologists emphasize that deep-sea coral gardens like the one discovered off Costa Rica are vital, highly vulnerable marine ecosystems. The complex, three-dimensional physical structures created by these corals provide essential shelter, feeding grounds, and breeding habitats for a wide variety of other deep-sea organisms. Because of this, they function as crucial centers of biological diversity in deep-water environments that scientists are only just beginning to comprehend and protect.
