Jaguars are the third-largest cat species on Earth, smaller only than lions and tigers, and the largest one left in the Americas. They’re incredibly sneaky despite their size, though, and excel at fading into the background. They may have been an uncommon sight even in their heyday, when they roamed from Argentina to as far north as the Grand Canyon and Colorado.

Still, they’re especially ghostlike today, and not just because of their natural stealth. Jaguars now exist only in fragments of their former range, having been wiped out in many places by generations of habitat loss and hunting. And while camera traps have given us glimpses of these elusive cats in recent years — including a few high-quality shots, like these from photographers Steve Winter, Nick Hawkins and Sebastian Kennerknecht — it’s relatively rare to record wild jaguars in the vivid detail they deserve.

In hopes of capturing new high-resolution images of jaguars in their element, WWF France commissioned photographer and videographer Emmanuel Rondeau for an expedition to French Guiana. This quest, documented in the WWF’s new web series “Mission Jaguar: Guiana,” took Rondeau to Nouragues Natural Reserve, which protects 105,800 hectares (408 square miles) of tropical forest in northeastern South America. Below are some of the images he caught there, courtesy of WWF France.

Welcome to the jungle

Founded in 1995, Nouragues stretches across a swath of French Guiana between the Approuague River and the Haute-Comté region. About 99% of the park’s vegetation is dense tropical rainforest, but it also supports other ecosystems like riparian forests, liana forests and “cambrouses,” or thick formations of bamboo-like grasses.

Spotted cat spotted

The jaguar’s range has shrunk by half in the last 100 years, according to the WWF, which cites deforestation and agriculture as the primary reasons. Jaguar populations have shrunk, too, disappearing entirely from some countries. This decline continues today, driven by ongoing habitat loss as well as depletion of prey species, conflict with humans and rising demand for jaguar parts in Asia.

Jaguars are listed as Near Threatened by the International Union for Conservation of Nature (IUCN), which also classifies the species’ population as decreasing. Yet despite their dire situation overall, these resilient cats have seized on some recent opportunities to claw back. In Mexico, for example, a 2018 study found that wild jaguar populations had grown by 20% in the last eight years. The increase is credited largely to a conservation program launched in 2005.