Creating 3D computer models of entire reefs – sometimes known as digital twins – can help researchers monitor these precious ecosystems faster and more accurately than ever before.

For decades, conservationists have tried to repopulate dead reefs with corals reared elsewhere.

Sexual reproduction helps keep coral colonies diverse and resilient. Now, scientists are doing it in a lab to restock flagging reefs.

Hundreds of organizations are working around the world to restore damaged coral reefs. New research shows that rapid ocean warming threatens these efforts.