Great Barrier Reef: AI-guided robots plant baby corals

After back-to-back bleaching events, parts of the Great Barrier Reef need help to recover. Scientists at the Australian Institute of Marine Science (AIMS) are pairing decades of ecological research with artificial intelligence and robotics to place juvenile corals where they have the best chance to survive and grow.

The effort uses a machine called the Deployment Guidance System to scan reef seafloor, pick target locations and deliver protective coral starters — a process that would be extremely difficult to perform accurately by hand at scale.

How the AI-guided robot chooses where to plant on the Great Barrier Reef

The Deployment Guidance System (DGS) fuses multiple data streams to make placement decisions. Sensors map the seafloor, cameras and computer vision classify substrate quality, and a deep-learning model synthesizes years of oceanographic and ecological records to identify promising microsites.

Rather than relying on a single instrument, the DGS coordinates a workflow of technologies so that each deployment is informed by the latest science. Dr. Ben Moshirian, the project engineer who helped develop the system, says the goal is to “ensure coral seeding devices are accurately and safely deployed in pre-specified locations.”

Key capabilities the system combines

• High-resolution seabed scanning and imaging
• Real-time classification of suitable substrate
• Deep-learning timing predictions for optimal larval release
• Precision release mechanisms that place devices close to target points

What the “baby corals” are and how they’re protected

AIMS deploys small, specially designed structures that act as nursery platforms for coral recruits. These ceramic coral analogues shelter young corals while they establish and grow, increasing survival compared with letting larvae settle unaided on bare reef rubble.

The DGS lowers the analogues from an AIMS vessel and releases them to land within about three feet of the chosen microhabitat, giving the juvenile corals a much better start than random settlement across degraded areas.

From spawning tanks to targeted reef seeding: the restoration pipeline

Over the last two decades, researchers have learned to time mass coral spawning events, capture free-swimming larvae, and rear juveniles in controlled aquarium settings. That progress has made coral seeding — deliberately placing young corals back onto reefs — a practical restoration method.

• Scientists predict spawning windows based on seasonal and environmental cues.
• Larvae are collected and grown until they can survive on settlement substrates.
• Robotic deployment systems then place those substrates in locations chosen for survival potential.

Why automation matters and how people stay involved

Automation extends the reach of restoration teams. According to project engineers, the system isn’t intended to replace researchers or Traditional owners; instead, it amplifies human-led decisions so crews can scale up seeding across vast reef areas that were previously impractical to treat.

Future plans include mounting the DGS on unmanned vessels for continuous, around-the-clock seeding and adapting the hardware so smaller recreational or tour boats — and even Traditional owner-operated craft — can deploy devices during routine trips. That approach would create more opportunities for communities and visitors to contribute to reef recovery.

What’s next for reef-scale coral restoration technology

As field deployments proceed, the DGS’s decision-making will evolve with new observations and ecological findings. The system’s developers emphasize that improved model accuracy and updated deployment rules will be built into the workflow, ensuring each mission reflects the best available science.

AIMS has released footage showing the DGS in operation and plans to continue testing ways to make coral seeding both more effective and more accessible to those who live by and rely upon the reef.

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Michael Thompson

Michael Thompson is an experienced journalist covering U.S. and global news. With ten years on the front lines, he breaks down political and economic stories that matter. His precise writing and keen attention to detail help you grasp the real‑world impact of every event.