There is a particular stillness to the Môle des Pêcheurs at Beaulieu-sur-Mer in the early morning — the creak of mooring lines, the flat light off the water, the faint smell of salt and diesel that no amount of glamour ever quite erases from a working harbour. By ten o'clock on a September Friday, that stillness will give way to something more deliberate: a row of exhibition panels arranged along the fishermen's jetty, each one a window into the sea that has always been right there, just below the surface.
On Friday 18 September 2026, from 10h00 to 16h00, the Port de Beaulieu Plaisance is hosting a free outdoor exhibition as part of the Journées Européennes du Patrimoine — the pan-European Heritage Days that open doors, archives and conversations across the continent every third weekend of September. The exhibition, titled 'La biodiversité marine sur la Côte d'Azur', takes the form of roll-up panels loaned by the Maison de l'Environnement de Nice, installed directly on the Môle des Pêcheurs at the port's address on the waterfront of 06310 Beaulieu-sur-Mer.
A Sea Worth Knowing
The Mediterranean is, by almost any measure, a sea of contradictions. It covers less than one percent of the world's ocean surface yet is home to somewhere between four and eighteen percent of all known marine species — figures that vary depending on the taxonomist you ask, but that converge on the same conclusion: this is one of the most biologically dense bodies of water on earth. The Côte d'Azur stretch of that coastline, from the Italian border down toward the Var, sits within a particularly rich zone where the continental shelf drops sharply, cold deep water rises to meet warm surface currents, and posidonia meadows — the slow-growing seagrass that functions as both nursery and oxygen engine — spread across the sandy bottoms between rocky outcrops.
Most visitors to Beaulieu see the sea as backdrop: the deep blue framed by Belle Époque villas, the boats at anchor, the horizon. The exhibition on the Môle des Pêcheurs proposes a different angle — one that looks down rather than out, and asks what exactly is living in that famous blue.
The Maison de l'Environnement de Nice, which has produced the panels, works to make environmental science legible to general audiences — a mission that feels quietly urgent on a coastline under sustained pressure from tourism, boat traffic and warming water temperatures.
On the Fishermen's Jetty
The choice of venue is not incidental. The Môle des Pêcheurs is the working edge of a port that still balances pleasure craft with the remnants of a genuine fishing tradition. Standing there with an exhibition about marine biodiversity, you are a few metres from the water those species actually inhabit. The panels — roll-ups, portable and legible in natural light — are designed to work in exactly this kind of open-air context, readable by a child at a glance and detailed enough to hold an adult's attention for longer.
The Journées Européennes du Patrimoine frame the occasion usefully. Founded in France in 1984 and adopted across Europe by the Council of Europe, the Heritage Days have always interpreted 'patrimoine' broadly — not only monuments and archives, but living landscapes, natural heritage, the things a place has accumulated and is still in the process of losing or protecting. An exhibition about the marine life of the Côte d'Azur fits that mandate precisely.
Beaulieu-sur-Mer itself is a town that rewards slow attention. Sheltered by the Cap Ferrat peninsula to the west and the hills of Èze to the east, it has one of the mildest microclimates on the Riviera — a fact the Belle Époque wealthy understood well, which is why the Villa Kérylos, the extraordinary Hellenic fantasy built by archaeologist Théodore Reinach between 1902 and 1908, still stands here. The port sits at the town's eastern edge, compact and unhurried by the standards of its neighbours.
The exhibition is free and open to all — the organisers are explicit that it is addressed to both children and adults. No booking is mentioned. The port's website, beaulieu.portsdazur.org, carries further information about the venue and its facilities.
September on the Riviera is a particular kind of gift: the crowds of August have thinned, the light has turned golden and slightly lateral, and the sea is at its warmest. Spending a morning on a harbour jetty, learning what swims beneath a surface you thought you already knew, seems like a reasonable way to spend a few hours of it.