For the first time in more than 100 years, scientists have identified a new penguin species. The discovery came not from a field expedition but from genetic evidence, which revealed that what was long considered a single species—the gentoo penguin—is actually four distinct species. The newly recognized species lives on the remote Kerguelen Islands in the southern Indian Ocean.
The finding reshapes the known diversity within gentoos, a group of penguins previously thought to be one widespread species. By analyzing DNA from populations across the region, researchers determined that the differences were substantial enough to warrant separate species status, with the Kerguelen population being distinct from the others.
The discovery also carries a warning. As oceans warm, several of these island populations could face growing threats, including the newly identified species. With a more accurate understanding of how many distinct lineages exist, conservation efforts can be better targeted to protect the most vulnerable groups.