The sea has returned the bodies, but not yet the full truth.

Days after five Italian divers died during a cave dive in the Maldives, investigators are still trying to reconstruct what happened in the dark underwater system near Vaavu Atoll. The group had entered a cave area at a depth of around 50 meters before failing to surface, triggering a search operation that soon became one of the deadliest diving disasters in the country’s history.

Among the victims was Monica Montefalcone, an associate professor of ecology at the University of Genoa, along with her daughter Giorgia Sommacal, researcher Muriel Oddenino, marine ecology graduate Federico Gualtieri, and diving operator Gianluca Benedetti. Four of the five had ties to the University of Genoa, a detail that has turned the tragedy into a moment of grief not only for families, but also for Italy’s scientific and marine-research community.

Now, attention has shifted to a disturbing question: did the divers realize they were in danger, or were they overcome before they could escape?

Authorities have not confirmed claims of a “last letter” or a written note revealing the cause of the tragedy. No official report has released such a document. But the idea of a final written trace, whether from expedition notes, research logs, or private messages, has captured public attention because of what investigators are still seeking: evidence of what the group believed they were entering before the dive began.

The confirmed facts are already troubling.

Reuters reported that Maldivian authorities are investigating whether the divers went deeper than permitted and whether they were using equipment suitable for the conditions. At depths beyond normal recreational limits, divers may require technical training and specialized gas mixtures. Using standard compressed air at such depths can expose divers to severe risks, including oxygen toxicity, nitrogen narcosis, confusion, disorientation, and loss of control.

The cave itself added another layer of danger. Unlike open water, an underwater cave offers no direct ascent to the surface. A single wrong turn, a loss of visibility, equipment failure, or sudden physiological impairment can become fatal within minutes.

The recovery operation showed just how hostile the site remained. After one body was found near the cave entrance, four more were located deep inside the third and largest section of the cave by Finnish technical divers using advanced equipment. A Maldivian military diver involved in the search later died from decompression sickness, underlining the extreme danger faced even by trained recovery teams.

For investigators, the central issue is no longer only where the bodies were found, but why the group entered that environment and whether the dive was properly planned, permitted, and equipped.

Was it a miscalculation of depth?

A failure of gas planning?

A sudden medical or physiological event?

Or did the cave conditions change so quickly that even experienced divers had no time to react?

Until forensic findings and dive-equipment analysis are complete, the cause remains under investigation. But one thing is already clear: the Maldives cave did not simply claim five lives. It left behind a chain of unanswered questions stretching from the seabed to the families waiting above.

If there were ten final lines written before the descent, investigators have not made them public.

For now, the only confirmed message from the bottom of the Maldives is far colder: five divers entered the cave, and none came back alive.