Wearing a helmet fitted with a headlamp and a protective mask, molecular biologist Raúl da Silva Armando Chomela moves through the confined, low-light interiors of cave systems in central Mozambique, examining bat populations and their byproducts as part of a broader scientific effort to understand subterranean ecosystems.

Chomela, originally from the port city of Beira, has spent two years conducting research inside caves located in and around Gorongosa National Park, a 4,000 square kilometre conservation area recognized for its biodiversity.

His work focuses on bats and guano, a substance formed from accumulated bird and bat excrement that serves as a complex biological environment.“Guano is far more than just bat droppings,” Chomela said in an interview, describing it as a dynamic ecosystem.

According to his observations, guano supports a wide range of cave-dwelling organisms, including beetles, amphibians and microorganisms that have adapted to life in conditions without sunlight.

The caves in Gorongosa represent highly specialized environments. Organisms found within them have evolved to survive in stable, low-light conditions with distinct microbiomes that differ significantly from surface ecosystems.

These systems are characterized by limited external input and reliance on internal nutrient cycles, often driven by organic deposits such as guano.Chomela’s research involves entering narrow passages and descending into enclosed spaces using ropes and ladders, often without full knowledge of the terrain or species present.

According to the park’s science department, the cave networks in the region extend across approximately 183 square kilometres, forming interconnected underground systems.

More than 100 bat species have been identified in Gorongosa, although there is no precise data on how many inhabit these caves. One site, known as Tombo Aphale 5, has been extensively studied and hosts an estimated population of over 10,000 bats.

The cave is also the site of an active archaeological excavation, indicating its broader scientific relevance beyond ecological research.Gorongosa National Park was established in 1960 during Portuguese colonial administration.

Following Mozambique’s independence in 1975, conservation was not prioritized under the ruling Frelimo party. Two years later, the park became a strategic location during the country’s civil war, which involved government forces and the insurgent group Renamo.

Renamo, initially formed with support from the Rhodesian government under Ian Smith and later backed by apartheid-era South Africa, operated within the park’s terrain. During the conflict, armed groups relied on wildlife for sustenance, leading to widespread depletion of animal populations.

By the end of the war, which lasted more than 15 years, approximately 95% of the park’s wildlife had been lost, including nearly all of its estimated 5,500 hippos.The effects of the conflict extended beyond environmental damage.

Local communities experienced forced recruitment and other human rights abuses during the war, contributing to long-term social and economic challenges in the region.

In the decades since the conflict ended, Gorongosa has become the focus of sustained conservation and restoration efforts. These initiatives have involved partnerships between international institutions and Mozambican researchers, aiming to rebuild ecosystems and support local development.

One such initiative is the Paleo-Primate Project, established in 2018 as a collaboration between the University of Oxford and Gorongosa National Park. The project is led by Susana Carvalho and integrates research in archaeology, ecology and geology.

It also provides training and employment opportunities for local researchers and students.Carvalho said the broader Gorongosa Restoration Project has become a significant employer in the region, contributing to economic stability.

The project supports scientific research while also engaging local communities in conservation efforts.Chomela joined Gorongosa’s biodiversity laboratory in 2022 before becoming part of the Paleo-Primate Project in 2025.

His research spans multiple disciplines, including the use of environmental DNA to reconstruct historical ecosystems and metabarcoding techniques to analyze genetic material from bats and primates.

He is currently a first-year doctoral student at the University of Porto in Portugal, with his research based at the EO Wilson Laboratory in Chitengo, located within the park. In addition to his academic work, he leads the genetics laboratory at the facility, contributing to ongoing studies of biodiversity and ecosystem dynamics.

Chomela has also raised concerns about the potential overexploitation of guano resources. While the material is valued for its agricultural and economic uses, he noted that excessive harvesting could alter the composition of cave ecosystems.

“When they see the guano, they see money,” he said, adding that unsustainable extraction could disrupt the balance of species that depend on it.He emphasized the importance of building a scientific foundation to inform conservation practices and community engagement.

“We want a scientific base to convince the community,” he said, referring to efforts to align local economic interests with environmental sustainability.

The integration of scientific research, conservation policy and community involvement remains central to ongoing work in Gorongosa, as researchers continue to document and restore one of Africa’s most ecologically significant regions.

This strategic decision highlights the Kingdom’s growing commitment to preserving its natural heritage and achieving the Vision 2030 goal of protecting 30 percent of its land and sea areas.

The two new reserves are vital for maintaining marine biodiversity and supporting ecosystems that thrive along the Red Sea coast. These areas are known for their rich marine life, coral reefs, and stunning underwater landscapes that attract both scientists and nature enthusiasts.

The announcement marks another positive milestone in Saudi Arabia’s efforts to safeguard its environment while promoting sustainable tourism.

Located northwest of Jeddah, Ras Hatiba spans over 5,700 square kilometers of diverse habitats.

It includes extensive coral reefs, mangrove forests, and seagrass meadows — all crucial ecosystems that support endangered species such as green turtles, dugongs, dolphins, whales, and sharks.

The reserve’s pristine environment also plays a vital role in carbon absorption and coastal protection, making it an essential part of the country’s ecological balance.

Meanwhile, the Blue Holes marine reserve is a natural wonder of geological and biological significance. These rare circular formations, found along the southern Red Sea coast, were first identified in 2022.

Scientists have discovered more than 20 of these formations, each hosting unique ecosystems teeming with marine life including colorful fish, invertebrates, and sea mammals. Their discovery has opened a new chapter for Saudi marine research and ocean conservation.

By designating these two areas as protected zones, the Kingdom is moving closer to its target of 30 percent protection coverage by 2030.

Currently, nature reserves cover over 16 percent of the country’s total area — a significant leap from just a few years ago.

This increase underscores the government’s commitment to advancing sustainable development goals, promoting eco-tourism, and ensuring the long-term health of the nation’s marine resources.

These conservation efforts are aligned with Vision 2030’s Green Initiative, which emphasizes biodiversity protection, renewable energy, and reducing the impacts of climate change.

Protecting Ras Hatiba and the Blue Holes will not only preserve marine ecosystems but also help create eco-friendly opportunities for tourism, research, and community engagement.

Saudi authorities have also emphasized that local communities will play a role in maintaining these reserves. Through education and involvement in sustainable practices, citizens and visitors will be encouraged to contribute to marine conservation efforts.

This collaborative approach ensures that economic growth, tourism, and environmental responsibility coexist harmoniously.

The Kingdom’s bold environmental steps send a strong message of leadership in marine conservation across the region.

By protecting coral reefs and blue holes, Saudi Arabia is setting a global example of how economic progress can go hand-in-hand with nature preservation.

These efforts also enhance the country’s reputation as a forward-looking nation investing in both its people and the planet.

In the coming years, experts expect the Ras Hatiba and Blue Holes reserves to become global centers for marine research, biodiversity education, and eco-tourism.

With world-class scientific studies and carefully planned management, Saudi Arabia’s marine reserves could become models of sustainability for other coastal nations.

The inclusion of these two stunning marine reserves reflects a hopeful vision — one where development and conservation work together for the benefit of future generations.

By protecting these rare ecosystems, Saudi Arabia reaffirms its commitment to nurturing its natural treasures while moving steadily toward a greener, more sustainable future.