On June 5, 2026, Aruba joined the World Network of Biosphere Reserves after UNESCO approved its designation during the 38th session of the International Coordinating Council of UNESCO’s Man and the Biosphere (MAB) Programme, held in Hernandarias, Paraguay.
The designation covers 100% of the island’s territory, making Aruba one of only two island nations in the world — alongside Sao Tome and Principe — to give their entire territory this level of protection.
What a Biosphere Reserve Actually Is
The MAB programme was established in 1971 to study and promote a sustainable relationship between people and nature.
Unlike other UNESCO designations, a biosphere reserve is not a hands-off sanctuary. The organization describes it as a “living laboratory” — a place to test approaches that balance conservation with economic and social development.
To make that work, each reserve is organized into three complementary zones.
The core zone has the strictest protections and typically covers national parks or other areas where extractive activity is banned.
The buffer zone surrounds the core and allows activities that are compatible with conservation, such as nature tourism, scientific research, and environmental education.
The transition zone — the largest of the three — is where most residents live and where sustainable economic activity is actively encouraged.
All three zones have to work together to meet UNESCO’s three core requirements: conservation of biodiversity, sustainable socioeconomic development, and logistical support for research and environmental education.
In Aruba’s case, the reserve covers roughly 47,700 acres of land and extends into an exclusive economic zone (EEZ) of nearly 7.4 million acres of ocean, with a population of approximately 108,000 people within its boundaries.
The Natural Features Behind the Designation
The case for the designation rests on a landscape of striking contrasts.
Aruba’s semiarid landscape, defined by columnar cacti and vegetation adapted to near-constant drought, shelters more than 30 endemic plant species and serves as a critical breeding ground for 10 of the world’s 16 tern species.
A quarter of the island falls within Arikok National Park, which protects not only its desert flora and fauna but also caves bearing rock paintings left by the island’s original inhabitants.
Along the coast, the landscape changes completely: mangroves and seagrass meadows function as essential nurseries for fish and invertebrates, while coral reefs sustain much of the marine life along the shoreline.
These coastal ecosystems also serve a defensive purpose, absorbing the force of storms and extreme weather events on an island that sits at very low elevation.
A Designation Built on Local Policy
Aruba’s path into the UNESCO network didn’t start from scratch.
Much of what now makes up the core zone was already under the stewardship of the Aruba Conservation Foundation (ACF), formerly known as the Aruba National Park Foundation, whose management practices had long met the technical standards required for that level of zoning.
Building on that foundation, the nomination process brought together the ACF, the Ministry of General Affairs, the University of Aruba, the Museum Foundation, and the Aruba Tourism Authority, with technical support from UNESCO’s Regional Office for the Caribbean.
Before Aruba’s inclusion, the English- and Dutch-speaking Caribbean had only two biosphere reserves: Saint Mary’s, in Saint Kitts and Nevis, and Northeast Tobago, in Trinidad and Tobago.
With Aruba’s addition, the World Network of Biosphere Reserves reached 784 sites across 142 countries, and the region gained a more meaningful presence within a network where it had long been underrepresented.
Eric Falt, UNESCO’s regional director for the Caribbean, noted that the biosphere reserve concept is particularly well suited to the realities of small island developing states, and expressed hope that Aruba’s example would encourage other countries in the region to join the network.
What Changes for the Island From Here
The designation does not impose new legal restrictions on existing economic activity. Instead, it acts as a mark of environmental quality that Aruba can build into its sustainable tourism strategy.
In practical terms, the island is now positioned to exchange knowledge and best practices with other reserves across the Caribbean and the wider region — including those in Cuba, the Dominican Republic, and Haiti — in areas such as climate adaptation, coastal conservation, and the management of endemic species.
Beyond the environmental significance, Aruba remains one of the Caribbean’s most visited destinations for Latin American travelers.
Located just 15 miles from the South American coast, the island sits outside the hurricane belt and maintains an average temperature of around 82 degrees Fahrenheit year-round.
Beyond the hotel strip, the island has beaches with crystal-clear water, and many of its residents speak at least four languages.
With the new designation, the same landscape that draws visitors now belongs to an international network dedicated to proving that conservation and development can reinforce each other rather than compete.
