Using the Marshall Islands' Reimaanlok ('look towards the future') framework, MIMRA and National Geographic Pristine Seas designated a 48,000 km² sanctuary around Bikar and Bokak atolls in Jan 2025, protecting the region's highest recorded coral cover and reef-fish biomass.
48,000 km²
Marine sanctuary area designated (Jan 2025)
452 dives (~643 hours)
Survey effort (2023)
Details
Maturity
Pilot
Promoter
Marshall Islands Marine Resources Authority (MIMRA), with National Geographic Pristine Seas
Reimaanlok is the Marshall Islands' national framework for community-based conservation-area planning, developed in the mid-2000s to embed customary reef and land tenure and traditional knowledge into an eight-step process for designing, legislating and monitoring protected areas.
Activities
In 2023, National Geographic Pristine Seas scientists conducted 452 dives (~643 hours underwater) around the uninhabited Bikar and Bokak atolls, recording the highest coral cover and reef-fish biomass documented anywhere in the central and western Pacific, the Marshall Islands' largest green sea turtle nesting colony, and healthy shark populations.
Results
These findings directly informed the government's designation, on 28 January 2025, of an 18,500 sq mi (48,000 km²) fully protected marine sanctuary around the two atolls, administered by MIMRA under the Reimaanlok framework.
Conclusions
Because the atolls are remote and uninhabited, benefits are expected chiefly through spillover to surrounding fisheries and long-term reef resilience rather than direct local livelihoods; quantified socio-economic outcomes had not been published as of the sources reviewed.
Implementation
Indicative cost
Medium (€50k–€500k)
Time to results
Medium (1–3 years)
Staffing & skills
MIMRA (Marshall Islands Marine Resources Authority), National Geographic Pristine Seas survey scientists
Conditions for success
Reimaanlok's eight-step community-based planning process
Rigorous baseline scientific survey ahead of designation
Common failure modes
No post-designation ecological or socio-economic trend data yet available