Grantee Spotlight: Delio Da Costa. Timor-Leste

The SOA hub Timor-Leste, led by Delio Da Costa, has received grant support from SOA since 2021 to conserve local marine ecosystems through research, advocacy, and education. In 2025, they implemented a bootcamp-style ocean literacy training for local youth. In 2026, they received a grant to support eighth university researchers in completing ecological assessments of local marine areas and publishing results as part of a broader effort to support Government Priority of 30x30.

May 27, 2026

SOA Timor-Leste 2026

Enabling University Researchers to Help Protect the Coral Triangle

Coral reef ecosystems in Baucau Municipality, Timor-Leste, are vital for biodiversity, fisheries, and coastal livelihoods but face threats from overfishing, coastal development, and climate change. Limited baseline data on reef health, fish populations, benthic composition, and water quality hinder effective management and protection. The SOA hub in Timor Leste has been led by Delio Da Costa since he founded it as an undergraduate student in 2021. He will train six hub members and two others—all final-year undergraduate students—in marine data collection so they can complete their thesis research and fill data gaps in government-managed marine areas in the Laga Administrative Post. Delio joined Conservation International in 2024 as the Project Coordinator for SEMACORE, an initiative to support community-led fisheries, climate resilience, and sustainable marine governance across six countries in the Coral Triangle. In 2025, Delio was among the 40 people representing 34 countries selected to the SOA Ocean Leaders Fellowship, and was featured in our Impact Report.

In Baucau Municipality, the average hard coral cover is estimated to be only 9%, based on the most recent available assessment conducted in 2013. Since then, no comprehensive ecological survey has been undertaken, resulting in significant gaps in baseline information on the condition of marine ecosystems.

This research will focus on the coastal waters of Laga Administrative Post, an area with high ecological and socio-economic importance. An estimated 851 households depend on marine resources in this area for their livelihoods, yet there is limited information on the status of coral reefs, reef fish abundance, and overall marine biodiversity. These data gaps hinder evidence-based planning and effective marine resource management.

In addition to supporting local livelihoods, the area serves as an important habitat and migratory corridor for marine megafauna, including marine mammals and sea turtles. Generating updated scientific data on coral reef health, fish abundance, and marine biodiversity will provide the evidence needed to guide conservation planning, inform government decision-making, and support the establishment of effective and sustainable marine conservation measures in Laga Administrative Post.

With this grant, Delio will train eight undergraduate students at the Universidade Nacional Timor Lorosa Department of Fisheries and Marine Sciences in ecological survey methods and field protocol training. These students will then be able to complete their theses, and contribute biodiversity data that is missing from efforts to protect marine areas. The results will be published in a technical report and policy brief delivered to decision-makers at ministries of tourism and fisheries, and disseminated via a workshop with local students and community members.

Environmental & Conservation KPIs

  • Availability of baseline ecological dataset for Baucau reefs: 1 integrated dataset established and documented
  • Identification of priority conservation areas (at least 2–3 priority reef zones) based on ecological indicators
  • 3-5 actionable recommendations included in the policy brief and technical report produced
  • Contribution to conservation planning processes with data shared with municipal authorities and relevant stakeholders

Operational KPIs

  • 1 site with 3 transects in Baucau Municipality
  • 250-300 data records across multiple parameters (fish, benthic, coral health, invertebrates, water quality)
  • 12-18 days of fieldwork (depending on weather conditions and site accessibility)
  • 5-6 standardized methods (UVC, Reef Check, Underwater Photo Transect, Manta Tow, BRUV, Belt Transect)
  • 1 technical report and 1 policy brief

Social Impact KPIs

  • 50-100 participants (including community members, students, NGOs, and government representatives)
  • 1 workshop of the dissemination workshops will conducted
  • 2-5 schools or educational groups reached (through outreach and engagement activities)

SOA Timor Leste Inur HItu MPA

Other Potential Timor-Leste MPAs

Inur-hitu is a 1,329ha area hosting approximately 115 species, 22% covered by seagrass, functioning as an important migratory and larval dispersal corridor, while also supporting the livelihoods of more than 780 coastal people. Delio, through his work with Conservation International, led a joint effort with government agencies to establish a 516ha No Take Zone along with 614ha Sustainable Use Zone, and 115ha set aside for turtle and shark conservation.

SOA Timor Leste

Lamsana-Laleia, Manatuto is a potential protected area of 10,000ha area including 23ha mangroves and 80ha of seagrass, with 42$ hard coral coverage. There are over 200 species present, including dolphin, dugong and crocodiles. Delio and his team are advocating for the establishment of 1,007ha of No Take in Lamsana, 7,210ha of Sustainable Use, and 214ha specially designated for elasmobranch conservation in Laleia.

All images propery of Conservation International Timor-Leste

Timor-Leste Hub

Delio da costa SOA timor leste
Delio Da Costa

Founder of Timor-Leste hub

Delio graduated with a double Master's degree in Environmental and Fisheries Sciences, and worked at the National University of Timor-Leste as a Lecturer before beginning work for Conservation International in 2024 as the Project Coodinator for the SOMACORE initiative to support community-led fisheries, climate resilience, and sustainable marine governance in Indonesia, Malaysia, Papua New Guinea, the Philippines, Solomon Islands, and Timor-Leste.

alexandre pereira timor leste hub soa
Alexandre Luís Pereira

Prpoject Leader

Alexandre is a final-year student in the Department of Fisheries and Marine Science at the National University of Timor Lorosa’e and serves as a Hub Leader for Sustainable Ocean Alliance (SOA) Timor-Leste. He joined in 2023, and in 2024 represented the hub as a presenter at the World Ocean Day workshop organized by UNDP. In 2025, he led the hub's Marine Environmental Education Socialization and Campaigning initiative.

Team member
Airos Benevides Da Cruz

Lead Researcher

Airos is a final-year undergraduate student in Fisheries and Marine Science at the Universidade Nacional Timor Lorosa’e (UNTL), with a strong academic foundation and research interest in marine conservation, coastal resource management, and sustainable fisheries. His work is driven by a commitment to advancing evidence-based, community-centered approaches to marine ecosystem protection in Timor-Leste.