Medieval Shipwrecks of Menorca: The 1240s Mystery and the Possible Meteotsunami
For more than 750 years, three medieval trading ships lay hidden beneath the waters of a quiet cove on the Spanish island of Menorca.
The vessels had vanished sometime in the 13th century, leaving behind no eyewitnesses and no clear explanation for their sudden disappearance.
Now, underwater archaeologists have located the overlapping remains of all three ships at Cala en Busquets, an ancient harbour near Ciutadella.
The discovery has reopened a remarkable medieval mystery.
How did three trading vessels end up on the seabed in the same area?
And could a sudden, powerful wave known as a meteotsunami have destroyed them?
The Cove of Mysteries
Cala en Busquets is a small sheltered cove on the western side of Menorca.
For centuries, the waters around the cove have hidden evidence of ships that once travelled through the western Mediterranean.
Modern underwater surveys eventually revealed that the seabed contained far more history than initially expected.
Archaeologist Xavier Aguelo Mas had been surveying the area for years before excavations began in 2023.
At first, the wrecks were not thought to be particularly ancient.
Researchers initially believed they could have belonged to a much later period.
Then the timber was examined more closely.
Three Ships From the 13th Century
Analysis of the surviving wood revealed something extraordinary.
The vessels were actually medieval, dating to the 13th century.
They have been given the temporary names Busquets I, Busquets II and Busquets III, after the cove where they were discovered.
The ships appear to overlap one another on the seabed.
That unusual arrangement immediately raised questions.
It suggested that the vessels may have gone down during the same general period rather than being unrelated wrecks separated by centuries.
A Disaster Beneath the Waves
Something powerful appears to have brought the ships to the seabed.
A severe storm is one possible explanation.
An accident or another maritime disaster cannot be ruled out.
But researchers have also considered a far stranger possibility — a meteotsunami.
Unlike an earthquake-generated tsunami, a meteotsunami is caused by atmospheric disturbances that can produce sudden changes in sea level.
Menorca is particularly vulnerable to this unusual phenomenon.
And that makes the discovery of three medieval wrecks in the same sheltered cove even more intriguing.
A Mystery That Survived for Centuries
The ships had remained hidden underwater for hundreds of years.
Their survival has given archaeologists a rare opportunity to examine medieval maritime activity in the western Mediterranean.
But the wrecks may also preserve the final moments of three crews who disappeared without leaving a clear explanation behind.
After more than seven centuries, the ships are finally beginning to reveal their story.
Three Ships Beneath the Seabed
The discovery at Cala en Busquets became even more intriguing when researchers realized that the wrecks were not isolated remains scattered randomly across the seabed.
The three vessels appeared to overlap one another.
That positioning suggested that the ships may have been lost during the same general period, rather than representing unrelated disasters separated by decades.
For archaeologists, this was an important clue.
Something powerful may have struck the cove and affected several vessels at once.
The Mystery of the 1240s
The surviving timber eventually provided a much more precise date than researchers had initially expected.
The ships appear to have been lost during the 1240s, placing their final voyage in a fascinating period of Mediterranean history.
Menorca was then part of a wider world shaped by trade, political conflict and contact between Christian and Muslim communities.
Merchant ships crossed the western Mediterranean carrying goods between different ports and cultures.
The three vessels therefore offer more than clues about a possible disaster.
They provide a rare snapshot of how people and goods moved around the medieval Mediterranean.
What Was Inside the Ships?
Among the surviving cargo are objects that reveal just how interconnected the medieval Mediterranean could be.
Researchers recovered Islamic ceramics alongside Christian objects.
One particularly unusual discovery was a small Christian encolpium, a type of reliquary traditionally associated with high-ranking members of the clergy.
The object is especially intriguing because its interior has not yet revealed everything it may contain.
It could potentially preserve a tiny religious object or other material placed inside centuries ago.
For archaeologists, even a small object like this can provide important clues about the people who travelled aboard the ships and the communities they interacted with.
A Connected Medieval Mediterranean
The cargo challenges the idea that Christian and Muslim communities existed as completely separate worlds.
Merchants, sailors and travellers crossed political and religious boundaries as they moved goods across the sea.
The ships may therefore tell a much larger story than the circumstances of their sinking.
They provide physical evidence of a Mediterranean where different cultures encountered one another through commerce.
The Rissaga Mystery
Menorca has a particularly unusual natural phenomenon known locally as a rissaga.
It is a type of meteotsunami in which atmospheric conditions can cause the sea level inside a harbour or narrow cove to rise and fall dramatically.
The water can appear to retreat rapidly before returning with enormous force.
Modern rissagas have been capable of damaging boats and flooding harbour areas.
That makes the phenomenon an intriguing possible explanation for what happened to the three medieval ships.
But there is an important distinction.
A rissaga has not been proven to have sunk these particular vessels.
It remains one of the possibilities being considered as researchers attempt to reconstruct the disaster.
A Disaster Frozen in Time
The three wrecks may therefore represent the remains of a single catastrophic event.
If a sudden surge swept through the cove, medieval crews could have had little warning.
Ships could have been thrown against one another, driven onto the seabed or overwhelmed by rapidly changing water levels.
More than 750 years later, the overlapping wrecks may still preserve the physical evidence of that moment.
What Could Have Sunk the Ships?
The discovery of three medieval wrecks in the same cove naturally raises one major question.
What happened to them?
There are several possible explanations, and researchers have to consider each one carefully.
A powerful storm could have driven the ships onto the seabed.
The vessels may have collided with one another or with rocks near the shore.
They could also have been caught by an unusually powerful change in sea level.
Without a written account describing the disaster, the wrecks themselves are the only witnesses left.
The Meteotsunami Theory
The most intriguing possibility is that a meteotsunami caused the disaster.
Unlike a conventional tsunami, which is normally associated with an underwater earthquake or other major geological event, a meteotsunami is produced by atmospheric disturbances.
Rapid changes in air pressure can generate waves that travel across the sea.
When those waves enter a narrow or enclosed area, they can become dramatically amplified.
Menorca is known for this phenomenon, making the theory particularly interesting in the case of Cala en Busquets.
Could Medieval Sailors Have Been Caught Unprepared?
A sudden rise or fall in sea level would have been extremely dangerous for medieval sailors.
Ships could have been dragged away from safe anchorage, slammed against the seabed or forced into other vessels.
Even experienced crews would have had little understanding of the atmospheric processes creating such an event.
To them, a rapidly changing sea could have appeared almost supernatural.
If a powerful rissaga struck the cove, it could potentially explain why several vessels ended up close together beneath the water.
The Evidence Beneath the Water
The wrecks themselves provide important clues.
Their position, the condition of the surviving timber and the objects found around them can help researchers reconstruct what happened.
Archaeologists can examine how the vessels were positioned and determine whether their remains show signs of a sudden destructive event.
They can also compare the wrecks with other known shipwrecks and natural disasters in the Mediterranean.
Every piece of timber and every fragment of cargo can therefore become part of the investigation.
A Snapshot of Medieval Trade
The ships also reveal something about the people who lived and traded around the Mediterranean in the 13th century.
Their cargo demonstrates that goods travelled between communities with different religious and cultural traditions.
Islamic ceramics could travel alongside Christian religious objects, while merchants and sailors moved between ports across a politically divided region.
The wrecks are therefore not simply evidence of a maritime disaster.
They are a time capsule containing clues about how interconnected the medieval Mediterranean really was.
The Mystery Deepens
The longer archaeologists examine the wrecks, the more questions appear.
Were the three ships travelling together?
Did they arrive at the cove independently?
Were they already anchored when the disaster struck?
And did the same event destroy all three?
Until those questions can be answered, the seabed at Cala en Busquets continues to hold a remarkable story that began more than seven centuries ago.
What Happened to the Three Ships?
More than 750 years after the three vessels disappeared, archaeologists are finally able to examine the evidence they left behind.
The wrecks at Cala en Busquets provide an extraordinary glimpse into a moment when medieval trade, maritime travel and the unpredictable power of the Mediterranean came together.
But the precise circumstances of their final voyage remain unknown.
A Mystery Beneath the Sea
The meteotsunami theory is fascinating, but it should not be mistaken for a proven explanation.
A powerful storm, an accident or another maritime event could also have played a role.
More evidence will be needed before researchers can determine exactly why the three ships ended up together beneath the seabed.
That uncertainty is what makes the discovery so compelling.
What the Wrecks Can Tell Us
Every surviving piece of timber, ceramic fragment and religious object can help researchers reconstruct the world in which these ships sailed.
The cargo reveals connections between different cultures, while the construction of the vessels provides clues about medieval shipbuilding.
The wrecks may also help researchers understand how people used the sheltered coves of Menorca as part of their trading routes.
A Medieval Time Capsule
Unlike a written document, a shipwreck preserves evidence of everyday life in physical form.
The objects carried aboard the vessels were not selected by archaeologists centuries later.
They were part of the lives of the people who actually travelled on the ships.
That makes the discovery particularly valuable.
It gives researchers an opportunity to study a moment in medieval history that would otherwise have disappeared completely.
The Riddle of the Rissaga
If a meteotsunami really was responsible, the disaster would demonstrate just how vulnerable medieval ships could be to a natural phenomenon that remains capable of affecting Menorca today.
A sudden change in sea level could have transformed a calm harbour into a dangerous trap within a very short period.
But until researchers can find stronger evidence connecting the wrecks to such an event, the rissaga remains a fascinating possibility rather than a final answer.
The Mystery Continues
The three medieval shipwrecks of Menorca have already answered one question.
They have shown that a remarkable amount of information about the medieval Mediterranean can survive beneath the sea for centuries.
But they have created several new questions.
Who were the sailors?
Where were the ships travelling?
Why did all three vessels end up in the same area?
And what force finally sent them to the seabed?
Until those questions are answered, the three ships of Cala en Busquets remain a medieval mystery hidden beneath the waters of Menorca — with the possibility of a sudden meteotsunami adding an extraordinary twist to their story.
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