The "Un Millón de Corales por Colombia" project is a national initiative aimed at the restoration and conservation of coral reefs across Colombia. Initiated in 2021, this ambitious project seeks to rehabilitate 200 hectares of coral reef by planting one million coral fragments across seven departments in Colombia, spanning both the Caribbean and Pacific regions (ref 1,2). It was developed as a response to the significant degradation of coral reefs caused by climate change, coastal development, overfishing, and pollution. These factors have led to the loss of about 80% of coral reefs in the Caribbean region. The initiative, led by the Colombian government in partnership with organizations such as Conservación Internacional, Parques Nacionales Naturales, Corales de Paz, and several regional environmental authorities, focuses on restoring this vital ecosystem (ref 2). The project encompasses constructing and maintaining coral nurseries and training local community members, including fishermen, as "coral gardeners." These gardeners are taught scientifically proven coral restoration techniques, including microfragmentation and larval rearing methods. A key aspect of the project involves continuous education and involvement of the community and stakeholders to ensure long-term sustainability (ref 4, 5). In Cartagena, the project plays a vital role in the restoration and conservation of coral reefs in this region, which is a key site for the initiative (ref 4).
Overview
Nature-based solution
- Blue infrastructure
- Coastlines
- Other
Key challenges
- Coastal resilience and marine protection (SDG 14)
- Coastal protection / hazard mitigation
- Marine and coastal biodiversity protection
- Marine and coastal research and/or education
- Inclusive and effective governance (SDG 16)
- Inclusive governance
- Social justice, cohesion and equity (SDG 10)
- Environmental education
Principal problems in Functional Urban Area (FUA)
- Climate-Related Hazards
- Coastal hazards (e.g. erosion, flooding)
- Environmental Degradation
- Biodiversity loss
- Poor water quality
- Resource Scarcity and Competition
- Over-exploitation of natural resources (water resources, overgrazing, fisheries, mangroves, fore products)
Key priorities
Focus
Project objectives
Implementation activities
Specification of climate or environmentally vulnerable communities
Main beneficiaries
- Citizens or community groups
- Coastal-dependent communities (e.g. small-scale fishers, coastal farmers, and indigenous peoples)
Governance
Management set-up
- Government-led
Type of initiating organisation
- National government
Participatory approaches/ community involvement
- Co-planning (e.g. stakeholder workshops, focus groups, participatory mapping)
- Taskforce groups
- Consultation (e.g. workshop, surveys, community meetings, town halls)
- Joint implementation (e.g. tree planting)
- Citizen monitoring and review
Details on the roles of the organisations involved in the project
Project implemented in response to ...
Type of enablers
Financing
Total cost
Source(s) of funding
- Public national budget
Type of funding
- Earmarked public budget
Non-financial contribution
Impacts and Monitoring
Environmental impacts
- Water management and blue areas
- Enhanced protection and restoration of coastal and marine ecosystems
- Expected enhanced protection and restoration of coastal and marine ecosystems
- Green space and habitat
- Increased conservation or restoration of ecosystems
- Expected increased conservation or restoration of ecosystems
- Increased protection of threatened species
- Expected increased protection of threatened species
Economic impacts
- Increase of green jobs (e.g. paid employment positions)
- Achieved increase of green jobs (e.g. paid employment positions)
Socio-cultural impacts
- Education
- Increased knowledge of locals about local nature
- Achieved increased knowledge of locals about local nature

Information about this nature-based solution was collected as part of the