Friends say Monica Sommacal was one of the most experienced divers in the group, which is why the Maldives cave tragedy is leaving so many people struggling to understand how she never resurfaced

Now, one chilling theory quietly being discussed among veteran divers is making the entire disaster feel even more disturbing.

Professor Monica Montefalcone (often known by her married name Sommacal) was no novice. At 51, she had logged hundreds of dives across the world’s most challenging environments — from the cold, treacherous wrecks of the Mediterranean to the strong-current channels of the Great Barrier Reef. Friends and colleagues describe her as methodical, calm under pressure, and deeply respected in the marine science community. That is precisely why her death, along with her 20-year-old daughter Giorgia and three others inside the Thinwana Kandu cave system at Vaavu Atoll, feels so incomprehensible to those who knew her.

The final investigation report released last week confirmed what many already feared: a cascade of errors, equipment limitations, and environmental forces overwhelmed the group. But for veteran technical divers following the case closely, one detail stands out as particularly haunting. Monica was the most qualified member of the team. She had completed advanced cave diving training years earlier and had successfully navigated overhead environments far more complex than the one in Vaavu Atoll. So how did someone with her experience become part of a tragedy that claimed five lives?

A chilling theory now circulating quietly among experienced cave divers suggests that Monica’s very expertise may have contributed to the fatal outcome. Some believe she made the difficult but ultimately tragic decision to push deeper into the cave system when the less-experienced members of the group began showing signs of distress. In technical diving circles, this is known as “the leader’s trap” — when the most capable diver feels responsible for the safety of the entire team and chooses to continue rather than abort, hoping to guide everyone through safely.

According to sources familiar with the recovered bodycam footage and dive computer data, the group entered the second major chamber smoothly. Visibility was still acceptable. But as they moved into the narrower passages, powerful down-currents began pulling them deeper. Silt-outs reduced visibility to near zero. At this critical moment, the report indicates that Monica — who was carrying the majority of the scientific sampling equipment — may have attempted to stabilize the situation and push forward to find a wider section where they could regroup.

Veteran divers reviewing the case say this decision, while made with the best intentions, may have sealed their fate. In cave diving, the golden rule is “any diver can call the dive.” Once the most experienced person commits to continuing, it becomes psychologically difficult for others to object. Monica’s daughter Giorgia, researcher Muriel Oddenino, Federico Gualtieri, and instructor Gianluca Benedetti were all less seasoned in true overhead cave environments. Their trust in Monica’s leadership was absolute.

One highly respected technical cave instructor, who has completed hundreds of penetrations in similar conditions, spoke anonymously: “Monica was the type of diver we all aspire to be — calm, prepared, and protective of her team. But in those conditions, even the best can make a fatal miscalculation. The moment you decide to push just a little further to help the group, you can cross the point of no return. The currents in Vaavu Atoll are unforgiving. Once they have you, it’s incredibly difficult to fight back out.”

The theory gains even more weight when considering the thermal protection failures reported in the final document. Monica’s suit, while high-quality, was not fully rated for the prolonged cold exposure the group encountered. As the most experienced diver, she likely prioritized helping the others — adjusting their buoyancy, maintaining physical contact in the darkness, and trying to establish new guidelines — instead of focusing on her own rapidly dropping core temperature. This selflessness may have accelerated her own disorientation and fatigue.

The bodycam recovered from Gianluca Benedetti captured fragments of this desperate struggle. Voices can be heard calling out to Monica for direction as visibility collapsed. Her responses, initially calm and authoritative, gradually became strained. The final minutes show the group becoming separated in the silt-filled darkness, with Monica apparently attempting to gather them back together in a narrow alcove — the same location where four of the bodies were later found clustered together.

Carlo Sommacal, Monica’s husband and Giorgia’s father, has read the full report and viewed the available footage. In a recent interview, he expressed both pride and heartbreak: “Monica would have done everything possible to protect the others, especially our daughter. That was who she was. A leader. A mother. A scientist who cared more about the team than herself. But I wish she had turned back sooner. I wish she had put her own safety first for once.”

The tragedy has left the global diving community in mourning and deep reflection. Many experienced cave divers have used the case to issue strong public warnings: no matter how skilled you are, the underwater environment always holds the final say. Overconfidence, even from veterans, combined with group dynamics and the pressure to complete scientific objectives, can lead to disaster in overhead environments.

The Maldives government has responded to the report by imposing stricter regulations on cave diving activities, particularly in Vaavu Atoll. Liveaboard operators must now provide proof of advanced technical certifications for any overhead penetrations, and real-time surface monitoring is being considered for high-risk dives.

For the families, the pain remains raw. Monica and Giorgia’s mother-daughter bond made their shared loss especially devastating. The other victims — Muriel, Federico, and Gianluca — were all passionate about ocean conservation. Their deaths represent not just personal tragedies but a significant loss to marine science.

As more veteran divers quietly discuss the “leader’s trap” theory, the story of Monica Montefalcone Sommacal takes on even greater tragedy. A woman who had survived some of the harshest underwater conditions the world has to offer ultimately fell in a relatively familiar environment because she refused to abandon those who trusted her.

The ocean she dedicated her life to understanding and protecting claimed her in the end. But her courage, her leadership, and her final efforts to save her team will not be forgotten. The chilling theory making the rounds among those who truly understand the risks of cave diving only deepens the respect for what Monica tried to do in those dark, freezing passages.

She walked into that cave as one of the most experienced divers present. She never walked out. And the reasons why may haunt the diving world for years to come.