
A letter to the Riviera Maya I met in 2010

Corals that are gone, sargassum that persists, and why I keep designing journeys
I travelled with my father to the Riviera Maya in 2010 to complete our diving certification. We immersed ourselves in what was known as the second largest barrier reef in the world. Four unforgettable dives: we swam alongside giant turtles, crossed natural tunnels formed by coral, and, while parasailing, saw from the air the immensity of the Mexican Caribbean, with its turquoise, cobalt blue and emerald green stripes.
During four days of training, I paid 400 dollars to learn how to breathe underwater in front of such wonder. The phrase —“second largest barrier reef in the world”— I had found the night before on Wikipedia, thrilled to have such a treasure just nine hours from Buenos Aires. It felt like a privilege to see it, to have it here in the Americas.
Tour operators preferred other adjectives: “crystalline waters”, “unique biodiversity”, “unforgettable experience”.
I learned that nitrogen can kill you if you ascend too quickly, that moray eels may mistake your finger for a fish, that you should never touch coral. Nobody mentioned that the coral we were told not to touch was already dying. Silence was part of the product. We had paid for a dream, not for an ecology lesson.
Cozumel, with its famous coral walls, remained pending. But even then we knew the reefs were in danger.
The return and the invisible brigades
I went back in 2017, this time to Tulum, though I didn’t dive. Armed with Google Maps and determined to avoid crowds, I found a beach labelled by algorithms as a “hidden gem.” At six in the morning, waiting for the sunrise, I discovered another scene: cleaning brigades.
Four men with rakes and a pickup truck collected mountains of algae before the first tourists arrived. They worked silently, efficiently, invisibly. When I asked, one said: “It’s temporary, miss. Just currents.” But his eyes said otherwise. It was 2017 and sargassum had been arriving for six years. How long does “temporary” last when no one dares to name it?
Living in Mexico, I learned that sargassum was no longer a seasonal inconvenience but a crisis shaping every conversation about Caribbean tourism. The question was no longer if it would come, but how to hide it.
The new Caribbean vocabulary
I learned a coded language of the industry:
- “Variable natural conditions” (there is sargassum).
- “Authentic Caribbean experience” (you’ll see the reality outside postcards).
- “Coastal renewal season” (do not come these months).
- And the most perverse: “Opportunity to discover other attractions.” As if ecological collapse were an invitation to buy more tours.
What caught my attention: the conversation always focused on economic impact. Almost never on environmental effects. And rarely on the reef itself.
The sargassum belt
Since 2011, beaches once ranked among the cleanest in the world have received tons of floating algae called sargassum. What first seemed like an anomaly became an annual pattern, with increasingly severe consequences.
Sargassum —Sargassum natans and Sargassum fluitans— has always existed, drifting in the North Atlantic as part of a healthy ecosystem. The problem is scale: excess nutrients from the Amazon and Orinoco, global warming, altered currents. All combined to form the Great Atlantic Sargassum Belt, a strip of more than 8,000 kilometres of algae —the size of 800 Buenos Aires— that drifts every year from Africa to the Caribbean.
It doesn’t just ruin postcards. It blocks sunlight corals need, releases toxic gases as it decomposes, alters water pH, and fosters bacteria competing with reefs. All this while the Mesoamerican Barrier Reef already suffers bleaching, acidification, and pollution.
In Martinique, a school was forced to close because of the gases. In Barbados, hotel occupancy fell 40% as sargassum was removed by truckloads. In the Lesser Antilles, fishermen fought with tangled nets. Yet on Instagram, the Caribbean still looked unchanged.
The questions that change
In 2010 I asked: Where’s the best visibility? At what depth are the turtles? Is the water warm?
Now I ask: Why is the water hotter each year? What stories are left untold? For whom does this paradise exist? Does my presence speed its decline?
Sometimes I think my diving certification was also a historical document: Certified Open Water Diver, Riviera Maya, 2010. Translation: authorised to explore a world that once existed.
Travelling to remember
Sargassum is not just an aesthetic nuisance. It is a messenger insisting on speaking while we perfect the art of not listening. Like climate change, it feels enormous, complex, ungraspable. But one thing is within our reach: stop looking away. Name what is happening. Remember. Because sometimes, remembering coral is also a way of trying to save it.
While the Caribbean learned to hide its wound, I sought another sea. On the Pacific, the Sea of Cortez revealed biodiversity the Caribbean had already lost. In La Paz —not in Cabo’s all-inclusive resorts— I swam with sea lions, watched manta rays leap, realised that balance is still possible in some places.
It is not that resort tourism is the only cause of collapse. But when a place becomes a stage for unreflective consumption —drinks, parties, selfies— it loses its ability to teach, to transform. And without transformation, why travel?
Journeys with memory
At HeySole! I design journeys for those who, like me, seek more than crystalline waters. For those who understand that travel is also about bearing witness, asking questions, creating conscious memories.
Because knowing a place is not only about where to eat the best ceviche or find the quietest beach. It is about understanding its silences, its transformations, its beauty and its wounds.
If this text made you think differently about how we travel, share it. Because remembering a coral is also a way of caring for it.

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