How to Choose Coral Species for Reef Restoration
Share
When restoring coral reefs, one of the big questions is: Which coral species should we plant?
Not all corals are equal—some grow fast but are fragile, while others grow slowly but can survive tough conditions. Picking the right mix of species is important for building reefs that last and continue to support the fish, food, and coastal protection people rely on.
We suggest a two-part strategy:
- Keep biodiversity strong – Choose species that represent a wide variety of traits (like shapes, growth styles, and roles in the reef). This spreads the risk, so if one type struggles, others can still keep the reef functioning.
- Prioritize survivors – Favor species that are naturally more common, widely spread, and better able to handle stress from warming oceans and other changes.
Using data on coral traits and ecology, an international team of researchers tested this approach and found that some reefs with only a few species still manage to cover most of the “trait space.” However, many current restoration programs don’t capture this diversity. By adding different kinds of corals, restoration projects could become more effective and resilient.
The takeaway: There’s no single “best coral” to restore. Instead, restoration should combine a variety of species chosen both for their diversity and their ability to persist in changing environments. This flexible approach can be tailored to local conditions and community goals.