Port-Cros National Park — created in 1963 and presented by the park itself as the first marine park in Europe — protects the waters of the Îles d'Hyères off France's Var coast, where six decades of no-take protection have produced famously large, approachable dusky groupers at La Gabinière and two of the French Mediterranean's most celebrated deep wreck dives, the Donator and the Grec.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Port-Cros is the smallest of the three Îles d'Hyères and the heart of a national park created in 1963 that the park itself presents as Europe's first marine park. The payoff of 60+ years of protection is measurable: GEM scientific censuses show the dusky grouper population multiplied by 8.5 between 1993 and 2011, with the largest individuals concentrated on the island's south-east coast and around the Gabinière islet, where a resident school of roughly 200 barracudas has held station since 2001. Diving is boat-only (operators run from Hyères, La Londe, Le Lavandou and Cavalaire) and tightly regulated: every diver and dive establishment must register for free on the park's online dive log (CaPeL, valid one calendar year), operators sign a partnership charter, sites are capped at 40 divers simultaneously, and boats tie to dedicated mooring buoys rather than anchoring. The marquee sites are the gorgonian-draped drop-offs of La Gabinière and the island's capes, plus two wine freighters — the Donator and the Grec — sunk three weeks apart by drifting WWII mines in late 1945 between Port-Cros and Porquerolles; both lie at 35–52 m and are strictly advanced dives. Be honest about the environment: this is temperate Mediterranean diving, not tropical. Surface water hits 24–25°C in August but a sharp thermocline keeps depths at 15–16°C even in midsummer (winter sea temperatures drop to 13–14°C), visibility runs a respectable 10–30 m, and the mistral or east winds can blow out exposed sites. The season is effectively May–October, and short-notice wildlife closures can apply — in spring 2026 a 200 m zone off La Gabinière's east coast was closed for two months to protect breeding Mediterranean shags.
Highlights
What makes this dive worth the trip.
Created in 1963, Port-Cros National Park is presented by the park itself as the first marine park in Europe. Its diving-management story tracks the whole history of Mediterranean marine protection: six regulated dive sites were established in 1991, a voluntary operator charter followed in 1994, became compulsory in 2004, and was converted into binding regulations in 2016.
Protection works and has been measured: visual censuses run every three years since 1989 by the GEM (Groupe d'Étude du Mérou) show the park's dusky grouper population multiplied by 8.5 in 18 years (1993–2011) — by 9.6 on the south-east face alone — while the brown meagre (corb) population multiplied by 7.8–9.6 between 1990 and 2010. The largest groupers concentrate on the south-east coast and around the Gabinière islet.
The 2005 GEM census counted 473 dusky groupers between 1 and 44 m in the park's waters (up 15% since 2002), with 38.5% of the population in the top 10 m and the biggest individuals (90–120 cm) found exclusively at the south-east sites — which is why divers at La Gabinière routinely meet large, unafraid groupers at recreational depths.
Marine life
17 species you’re likely to encounter on a dive here.
Dive sites
7 signature sites at this destination.
La Gabinière – Tombant Est
The east drop-off of the Gabinière islet, the signature dive of Port-Cros and one of the most celebrated sites in the French Mediterranean. A near-vertical wall and rocky spur fall to sand at 45 m, with the 'Dolmen' — a massive swim-through rock formation — at 33–35 m. Groupers are abundant between 15 and 25 m and famously indifferent to divers, and a school of roughly 200 barracudas has been resident at 10–20 m since the summer of 2001. Healthy red and yellow gorgonians cover the deeper wall. Anchoring is prohibited on the east face: boats moor in the Calanque Sombre or run drift entries from the Calanque aux Loups.
10–45 mintermediateDay boatModerateVisibility 10–30 m
Sec de la Gabinière
The offshore shoal beside the Gabinière islet — the most demanding of the Gabinière dives, rated CMAS 3★ by local operators. The rock rises from 45 m of water, swept by current that concentrates the pelagic action: schooling barracudas, amberjacks, porgies and big groupers patrolling the gorgonian-covered flanks. Reserved for experienced divers comfortable with blue-water descents and current.
12–45 madvancedDay boatStrongVisibility 10–30 m
Pointe de Montrémian
Off the north-west tip of Bagaud, the small island in the park's integral reserve just west of Port-Cros. Nicknamed 'the ski slope' for its steep sand slide, the site runs down rocky ridges to sand at 31–33 m, past the Montrémian rock — a 4–5 m boulder roughly 20 m around, completely covered in gorgonians. Fauna is varied rather than spectacular: groupers, morays, congers, octopus, red mullet, wrasse and a strong showing of nudibranchs on the western rocks.
5–33 mintermediateDay boatModerateVisibility 10–25 m
Le Grec (Sagona)
A 53 m steamer built in 1912 by the Dundee Shipbuilding Co. in Scotland; carrying wine under a Panamanian flag with Greek papers and crew (hence the nickname), she struck a floating mine on 3 December 1945 — three weeks after the Donator and in the same waters — killing two crew with one missing. The wreck lies broken in two on sand, the bow some 50–80 m from the stern, with passageways at 35 m, the poop deck at 40 m and the propeller at 47 m. Gorgonians cover the gangways and dense congers live in the bow section. An advanced, open-water wreck that can be hard to locate offshore east of Porquerolles.
35–47 madvancedDay boatModerateVisibility 10–30 m
Pointe de la Galère
The north-eastern point of Port-Cros and one of the park's original regulated dive sites (established 1991). A relaxed profile over rocks, sand and posidonia seagrass from the surface to about 35 m, known among local operators for its density of fish and especially its conger and moray eels tucked into the boulder field. A good second dive after the Gabinière or an easy site for less experienced divers when the east wind stays down.
5–35 mbeginnerDay boatLightVisibility 10–25 m
Le Donator (Prosper Schiaffino)
A 78 m cargo ship built in Norway in 1931, renamed Prosper Schiaffino and used to carry wine from Algeria; she struck a drifting mine on 10 November 1945 while sheltering from the mistral south of Porquerolles and sank in about four minutes. The wreck sits upright on sand between Porquerolles and Port-Cros, deck at around 35 m and propeller at 52 m, and is widely rated among the best wreck dives in the Mediterranean: corridors, holds, the wheel and engine remain explorable, the whole structure draped in red and yellow gorgonians and clouded with anthias. Penetration requires advanced training and equipment; removing anything is prohibited.
35–52 madvancedDay boatStrongVisibility 10–30 m
Pointe du Vaisseau
A rocky ridge off the south-east of Port-Cros shaped — as the name suggests — like a ship's hull, dropping over a 15–20 m wall to sand at 38 m across roughly 9,000 m². One of the park's six regulated sites, it packs curious brown groupers, red and white gorgonians and a coralligenous habitat the park credits with more than 650 invertebrate species. Mooring buoys sit on both sides of the point, making it workable in most wind directions, and the range of depths suits everyone from new divers to experienced ones.
15–38 mbeginnerDay boatModerateVisibility 10–25 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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