By Danielle Finnegan | May 13, 2026 | Guanacaste
Biodiversity
Destination

Área de Conservación Guanacaste continues to reveal new dimensions of the natural world, reminding us that even after decades of research, this extraordinary landscape remains full of discovery.

Most recently, researchers identified a new species of marine worm at Playa Naranjo, an important finding that speaks to the depth and diversity of life within ACG, from the Pacific seafloor to mist-covered cloud forest canopies.

That same spirit of discovery continues on land. After more than 50 years of botanical inventory, researchers have documented over 4,100 of an estimated 5,500 to 6,000 plant species in ACG. Through the PlantNet app, supported in part by tens of thousands of field photographs contributed by ACG botanists and parataxonomists, this knowledge is becoming more accessible to scientists, students, and curious visitors alike. ACG is also developing its own Digital Flora, a platform that will further open this growing body of knowledge to the public through the ACG website.

Wildlife monitoring is offering encouraging signs as well. Camera traps recently captured a jaguar mother with two cubs, a hopeful glimpse into the future of one of Guanacaste’s most iconic species. Along the coast, Olive Ridley sea turtle nesting numbers saw a modest increase this past season compared to the year before, underscoring the importance of long-term research and careful stewardship.

Closer to Peninsula Papagayo, Sector Horizontes continues to expand opportunities for hiking, mountain biking, birding, and learning. With the new website, explore-horizontes.com, access to ACG’s dry forest landscapes will become easier than ever, inviting more people to experience and understand one of Costa Rica’s most important conservation areas.

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