A group of researchers has confirmed the existence of a well-preserved mesophotic coral ecosystem on the continental shelf of Benin, in the Gulf of Guinea. This finding was made six decades after old studies suggested that this formation had likely perished. The recent discovery was made possible by the use of sonar, underwater drones, and deep-water imaging systems.
The research was conducted by scientists from the Beninese Institute of Fisheries and Oceanographic Research under the leadership of Gérard Zinsindohué. The team studied an area marked by data from the 1960s. They discovered structures corresponding to reefs at depths greater than 50 meters and recorded signs of an active marine environment.
The expedition identified a community consisting of various species of corals and fish associated with this habitat. Researchers emphasize that this discovery demonstrates how little-studied coastal areas can conceal unknown ecosystems.
The first hints of a reef appeared in 1960s studies when surveys aimed at identifying favorable fishing grounds registered a possible deep coral formation. At the time, the structure was considered most likely dead, but new researchers hypothesized that it was a mesophotic ecosystem formed in areas with limited natural light.
To test this possibility, the team used old records as a reference and analyzed 11.5 kilometers of seabed using sonar equipment. Signs similar to those expected for coral formations were observed in two zones, prompting scientists to conduct a more detailed verification using underwater vehicles and special cameras.
The images obtained showed the presence of a seemingly healthy coral zone inhabited by eight varieties of corals and eight species of fish. Among the observed animals were African golden groupers, black soldiers, Guinean angels, West African goatfish, Moniabi surgeons, three-striped butterflies, and two species of mermaid fish.
According to Gérard Zinsindohué, the lead author of the article published in the scientific journal Frontiers in Marine Science and a scientist at the Beninese Institute of Fisheries and Oceanographic Research, locating the reef was only possible after a campaign marked by uncertainty and technical difficulties. He noted: 'It was a mix of long days at sea, technical problems, and great uncertainty.'
The scientist explained that visual confirmation of the environment was the decisive moment for the study. Zinsindohué recounted the team's reaction upon seeing the first images captured by the underwater equipment: 'Suddenly we could really see the seabed.'
Researchers stress that the found formation does not necessarily represent a continuous coral barrier. The analyzed material indicates that these are coral clusters distributed across rocky areas suitable for the development of these organisms, although future expeditions may uncover other nearby structures.
In Zinsindohué's opinion, this finding may indicate the existence of other similar systems that have not yet been documented in the coastal areas of West Africa and other parts of the world. Nevertheless, the researcher insists that every potential discovery must be confirmed by field research.
The team has not yet collected direct coral samples, which prevents the final identification of the discovered species. There is also insufficient data to determine whether this ecosystem was alive in the 1960s or if it recovered later. The authors believe that the current work is only an initial stage. Historical records suggested a possible extent of about 40 kilometers along the coast, but currently, only a small part of this area has been analyzed. The next step for the researchers will be to conduct broader studies using scientific dives and sample collection to understand the trajectory of this marine environment and what it says about changes in the ocean of this region over time.
Underwater ecosystems contain numerous secrets, including fragile marine environments and critical infrastructure such as coral reefs, ship hulls, underwater pipelines, dams, tunnels, and bridges. For a long time, inspecting these areas required sending divers into complex and often dangerous conditions.
During strong waves or in emergencies, inspections could be delayed for several days while teams waited for divers to arrive. It was this problem that prompted two engineers to ask: if robots can transform warehouses, factories, and hospitals, why are people still sent into the most dangerous underwater zones?
This question led to the creation of EyeROV. The company, founded in 2017 by IIT graduates John T Matai and Kannappa Palaniappan, develops indigenous artificial intelligence-based underwater robots. These systems are designed not only for infrastructure inspection but also to assist scientists in studying marine ecosystems and monitoring coral reefs in the Andaman and Lakshadweep islands.
The founders' journey to EyeROV began far from the sea. Johns and Kannappa were friends since their student days but went different paths. Kannappa studied at the Indian Institute of Technology Madras, while Johns studied at the Indian Institute of Technology Delhi. After obtaining a master's degree, Johns joined Samsung Research and Development, but his interest in robotics soon led him to GreyOrange, one of the early Indian robotics startups.
Working there showed him that Indian engineers could create globally competitive robotics companies. Meanwhile, Kannappa encountered a different problem at sea. Working with scientists aboard a vessel, he witnessed the consequences of ship collisions, which required urgent underwater hull inspection. However, no diver was immediately available. Even a small delay in the open ocean could turn into a serious operational problem.
When the friends reconnected and compared their experiences, they realized that underwater inspection still heavily relied on divers, revealing an obvious gap. They decided to create an alternative. Today, EyeROV operates from the Maker Village campus in Kerala's Technology Innovation Zone in Kochi, and also has an office in New Delhi.
The company has developed a range of marine robotic systems for various underwater conditions. Their compact inspection robot, TUNA, is equipped with HD and 4K cameras and can dive to depths of up to 300 meters. The larger inspection platform, SAGARA, uses dual 4K cameras with 10x zoom and can move in six directions, allowing for more complex tasks. The autonomous surface vessel, Sea Serpent, is designed for coastal surveillance and monitoring. Furthermore, the company developed TSROV, a robot capable of navigating narrow tunnels and pipelines up to 10 kilometers away, useful for infrastructure inspections. Another platform, iBOAT ALPHA, is used for hydrographic mapping and bathymetric surveys. Together, these systems represent an Indian alternative to imported marine robotics technologies.
Underwater inspection is rarely simple. Murky rivers, deep reservoirs, and damaged tunnels often reduce visibility to almost zero. This is where the EyeROV AI platform, EVAP, comes into play. After the underwater robot enters the water, operators control it remotely via a control station, and video feeds are transmitted to the surface. Then, the AI platform processes these frames to detect defects, create digital models, and form clearer visual reconstructions of underwater structures.
This allows engineers to detect corrosion, cracks, leaks, and structural weaknesses without physically entering the water. For marine researchers, this opens up new possibilities: scientists studying coral reefs in the Andaman and Lakshadweep can collect detailed visual data remotely, reducing the need for repeated dives that might disturb sensitive ecosystems. Even in low visibility conditions, enhanced visualization helps researchers monitor the condition of reefs, biodiversity, and environmental conditions more effectively.
Coral reefs are among India's most vulnerable marine ecosystems. Rising sea temperatures, pollution, and physical damage continue to put pressure on these habitats. Monitoring them is difficult because many reef systems are located in ecologically sensitive areas where frequent human activity itself can be destructive.
EyeROV's underwater robots offer a less invasive method of observing these ecosystems. The robots capture high-quality video footage and environmental data, minimizing direct human intervention. For scientists, this means a deeper understanding of reef health, bleaching events, and changes in biodiversity. The company has already supported marine biodiversity research in the Andaman and Lakshadweep archipelagos, contributing to current conservation efforts. This is an example of how technology developed for industry can also contribute to environmental protection.
For coastal communities and industries, safe underwater inspections can reduce downtime and increase safety. For scientists, better underwater visibility means higher quality data and a clearer understanding of changing marine ecosystems. For India, it demonstrates the growth of a domestic marine robotics sector created by Indian engineers.
EyeROV's work is changing the approach to underwater inspections, replacing risky human dives in places that may be dangerous, inaccessible, or ecologically sensitive. Thus, these robots help researchers, engineers, and conservation specialists better understand the world that remains largely hidden beneath the waves.
