Monica Montefalcone, a University of Genoa marine ecologist and leading expert on Mediterranean Posidonia oceanica meadows, died in a diving accident in the Maldives at age 51.
Her daughter, Giorgia Sommacal, 23, died with her, along with three other Italians, four of whom were connected to the University of Genoa.

To Monica Montefalcone, the sea was a place to study: its plants, reefs, hidden habitats and seasonal changes. A meadow of Posidonia oceanica was not just a patch of green beneath the water. It provided a nursery, offered shelter, stored carbon, and afforded coastal protection. To most swimmers it might have looked like seagrass. To Montefalcone it was a living system, and one that recovered slowly once damaged.

That slowness mattered. Posidonia grows at a pace that does not fit human timetables. In the Mediterranean, more than half of its meadows have been lost over the past century; in Liguria, the losses were especially severe. Laws and European directives could help protect what remained, she argued, but protection alone was not enough. Where hundreds of hectares had disappeared, waiting for nature to repair itself would mean leaving the work to future generations. Active restoration, including the manual replanting of seagrass, was therefore a practical response to a practical problem.
Monica Montefalcone. From Sky TG24Monica Montefalcone. From Sky TG24
Montefalcone, who died on May 14th in a diving accident in the Maldives, was 51. Her daughter, Giorgia Sommacal, 23, died with her, along with Muriel Oddenino, a research fellow who had worked with her, Federico Gualtieri, a recent marine-biology graduate, and Gianluca Benedetti, a diving instructor and boat operations manager. Four of the victims were connected to the University of Genoa, where Montefalcone was an associate professor of ecology. The group had been diving in caves in Vaavu Atoll. The final details of the accident were still being pieced together.

Her own life had long been tied to the sea. At the University of Genoa she worked on coastal marine ecology, benthic habitats, coralligenous assemblages, marine caves, seagrass meadows and the effects of climate change on marine ecosystems. She mapped, monitored and measured. She also restored. WWF described her as one of the foremost experts on Mediterranean Posidonia ecosystems and recalled her role in conservation and habitat-restoration projects from Liguria to Apulia and beyond. The work was technical, but it did not stay in the laboratory. It reached policy, conservation practice and public understanding.

She was also a teacher in a field that demands more than lectures and papers. Marine biology, as she knew, was learned in laboratories and journals, but also underwater, in cold water and poor visibility, with equipment that had to be trusted and observations that had to be exact. The Marine Landscape Ecology Laboratory she coordinated at DiSTAV was one of her proudest achievements. In videos she spoke with satisfaction about watching it grow and about the collaborators whose skill and commitment kept it alive. Yet even in that pride there was unease. She knew how often young researchers in Italy gave years of talent and discipline to a system that could not offer them stability.

That concern for younger scientists ran through her public remarks. She remembered her first conference of the Italian Society of Marine Biology as a formative moment, the first time she had presented her research outside the university and felt part of a scientific community. Later, as president of the society’s Benthos Committee, she took pleasure in seeing students and early-career researchers use SIBM as a place to meet, compare ideas and belong. Speaking from the heart, she said she would tell young marine biologists not to stop believing in their passions and dreams. Then came the practical qualification: patience would be needed, and a clear view of the difficult path ahead.

In tributes, colleagues and friends remembered a scientist who could make the underwater world intelligible. She explained coral bleaching, ocean acidification, seagrass loss, and habitat restoration clearly, without reducing them to technical problems. In Mandriola, in Sardinia, where she had spent summers for decades with her family, friends remembered her swimming, running, watching sunsets, and talking about Posidonia as naturally as others might talk about the weather. Her daughter Giorgia had grown up there too.

After a death like this, the sea can seem cruel. Montefalcone’s work points to something less simple. She knew the sea as a place of beauty, risk, and damage, but also as a place where careful study could still make a difference. She spent her career measuring what was being lost, teaching others how to see it, and helping repair what could still be repaired.