In a fascinating exploration of the depths of the South Atlantic, biologists from the CONICET and the Argentine Museum of Natural Sciences have identified a new species of sea urchin.
Designated as Bathycidaris argentina, this creature inhabits between 1,100 and 1,950 meters deep in the Mar del Plata submarine canyon.
This discovery, although small in size, highlights the vastness of the deep ocean as a territory still largely unexplored.
The discovery of new species is crucial for improving decision-making in marine conservation. The location of the canyon, 250 kilometers off the coast of Buenos Aires, and its complex topography make it a true “biological corridor.”
Bathycidaris argentina, with an intense dark violet color, reaches up to 2 centimeters wide and 1 centimeter high, excluding its spines.
New species of sea urchin
This urchin has developed remarkable adaptations to survive in such a hostile environment, where its mode of reproduction is particularly interesting. Females care for their embryos, housing them near the mouth, protected by spines.
The spines of this species are not only defensive but also act as anchor points for other organisms such as polychaete worms and hydrozoan colonies.
This role in the seafloor ecosystem underscores the importance of its conservation, as the loss of a species can destabilize the ecological balance.
Based on data from oceanographic campaigns in 2012 and 2013, aboard the vessel Puerto Deseado, the study combined morphological and DNA analyses to confirm that Bathycidaris argentina is a new species.
This approach is essential in the study of the deep sea, where genetic differences may not be visible to the naked eye.
The The Zoological Journal of the Linnean Society has published this study, which also suggests biological connections with subantarctic and Antarctic faunas. This indicates that there are underwater biological routes yet to be fully understood.
This discovery, along with the use of advanced tools, such as genetics and underwater vehicles, offers hope for future discoveries in the South Atlantic. With each new piece of data, the scientific foundation necessary to discuss marine conservation with precision is strengthened.
