
Aquatica Illes Medes
SSI Diamond ITC in L'Estartit since 1996, specialising in small-group, low-impact diving in the Illes Medes Marine Reserve from a campsite-based dive school.
Seven-islet limestone archipelago off L'Estartit, the Spanish Mediterranean's flagship marine reserve with tame groupers, gorgonian walls and tunnel systems.
Last updated May 2026
Forty years of no-take protection have turned this seven-islet archipelago a kilometre off L'Estartit into the Spanish Mediterranean's clearest proof of recovery. The story shows up in the fish. Large dusky groupers hold territory at virtually every island site from five metres down to the deep walls, often approaching divers rather than drifting away. Divers still name the "big black mero" and schooling barracuda as the defining image of the reserve.
The archipelago is the submerged continuation of the Montgri massif: limestone ridges carved into tunnels, caves, vertical walls, pinnacles and boulder fields. La Vaca cuts a thirty-metre tunnel through Meda Gran, backlit by daylight with a resident grouper at the entrance. The Dofi complex crosses Meda Petita through chambers, short caves and a cathedral-vaulted passage at eighteen to twenty metres, carpeted in red coral. On the outer faces, Pedra de Deu and Pota del Llop drop past forty-five metres through blue and yellow Paramuricea fields. Sheltered options like El Salpatxot, Embarcador del Frances and Cova de la Reina keep Open Water divers inside the same ecosystem.
The daily diver quota shapes every visit. Book in advance, especially for summer weekends and the signature rotations of La Vaca, the Dofi pair and Carall Bernat. Park permit is 5.30 EUR per dive per diver in 2026, collected through your centre along with the mandatory eco-briefing. Bring certification at second-class or Advanced Open Water level, federative licence or private insurance, and a good dive light for the tunnels.
Local centres cluster in L'Estartit with one operator in L'Escala. Pricing is consistent: single-dive all-in roughly 43 to 65 EUR, Open Water courses 420 to 459 EUR, park tax a pass-through. Summer premiums run ten to fifteen percent; own-equipment tiers save twenty to thirty EUR on a double dive. Several operators carry CETS and ISO 14001 certifications promoted through the park's eco-briefing programme. Plan for 5mm hooded as the summer suit minimum. A thermocline from twenty metres down drops water temperature sharply even in August. Spanish regulars recommend September over August for warm water, better visibility and thinner crowds. The Montgri coast supplies try-dive training and a fallback when island quota is full or the wind turns east.
Limestone extension of the Montgri massif submerging into the Mediterranean. Karst topography of vertical walls, tunnels, caves, pinnacles and boulder fields. Nutrient flow from the Ter river mouth feeds gorgonian fields, red coral, sponges and the reserve's pelagic life.
What can go wrong here, and what divers do about it. Conditions change - take the briefing from the operator on the day.
The must-do dives in this area, picked by our editors.
Experienced divers chasing the signature open-water pinnacle of Illes Medes with close grouper encounters and pelagic fly-bys
Photographers and recreational divers wanting a naturally lit Mediterranean cavern swim-through with optional advanced wall extension
Mixed groups wanting one cavern site that fits OW divers on a short tunnel, AOW divers on a long through-route, and photographers under light shafts
Open Water divers and photographers wanting a relaxed, fish-rich Medes dive with rare Posidonia meadow habitat
Experienced divers chasing pelagic encounters and a deep gorgonian wall on the exposed southern edge of Illes Medes
Diamonds mark nearby dive areas — tap to explore.

Northern entry to the Dofí cavern complex on Meda Petita with three route choices, ceiling light shafts, and a 12 m red coral wall on the outer face.

Iconic pinnacle off the south of Illes Medes — gorgonian walls and arches anchoring the Grandes Meros grouper cluster, with strong-current potential.

Sheltered north-face slope on Meda Gran with gorgonian-wrapped blocks, abundant grouper and sea bream, finishing in a Posidonia meadow.

Southern entrance to the Dofí cavern complex on Meda Petita, marked by a bronze dolphin statue at 12 m and a through-route into La Catedral passage.

Current-swept islet at the southern Medes, paired with Tascó Gros across a 5 m channel; barracuda schools, large groupers and seasonal eagle rays.

Rock chain between Tascó Petit and Meda Gran with prolific biomass at 6-23 m and the Escrivana reefs dropping to 38 m through three gorgonian-covered barriers.

Deep gorgonian wall on Meda Gran's northeast end with yellow fans from 15 m, blue-gorgonian canyons toward 44 m, and a dual OW/AOW shotline.

Wide 30 m through-tunnel under Meda Gran with three lit entrances, a habituated resident grouper, and a gorgonian wall on the north exit.

Deepest dive in the Medes reserve — a north-east gorgonian wall on Meda Gran dropping to 50 m, weather-gated and less-dived than its neighbours.

Large 210 m islet at the southern Illes Medes; gorgonian walls, easy circumnavigation, and a Garbí-sheltered buoy that holds when others blow out.
Book online or contact a centre that dives this area.

SSI Diamond ITC in L'Estartit since 1996, specialising in small-group, low-impact diving in the Illes Medes Marine Reserve from a campsite-based dive school.

Family-run PADI centre in L'Estartit, run by Peter and Jacqueline Lane for nearly 40 years, with PADI Green Star and four other environmental credentials.

PADI 5 Star centre on L'Estartit seafront with stay-and-dive packages, four daily boat dives between Illes Medes and Montgrí, plus tec diving.

Family-run PADI 5 Star Resort and SSI centre in L'Estartit since 1990, with two 30-diver boats running hydraulic lifts to the Illes Medes reserve.

Long-running L'Estartit dive centre (founded 1969) running a four-boat fleet to the Illes Medes reserve and Montgri coast, with SSI training and a strong family/snorkel programme.

Family-run hotel and dive centre in L'Estartit since 1985, with two dedicated boats and four daily departures to the Illes Medes reserve.

Owner-led PADI centre on Carrer Salines in L'Estartit, capping each guide at 5-6 divers across the Illes Medes, Montgrí, and Cap de Begur.

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Yes. A daily diver quota applies and summer weekends fill days ahead. Contact your chosen centre early; they handle the park permit and slot allocation. September visits still benefit from booking ahead for weekend boats.
5.30 EUR per diver per dive in 2026, set by the park and collected through your dive centre. Snorkelling inside the reserve needs no permit.
El Salpatxot is the standard introduction: shallow, full of groupers and morays, accessible to any Open Water diver. La Vaca's tunnel through Meda Gran is the signature tunnel experience. For walls and pelagics, Carall Bernat is iconic but can run strong current.
Fishing has been banned since 1983, and over forty years without pressure have produced what Spanish divers call the efecto reserva. Large territorial individuals are now accustomed to approaching divers rather than fleeing, especially at Tascons, La Vaca and Carall Bernat.
Yes for certified Open Water divers. Salpatxot, Embarcador del Frances and Cova de la Reina give reliable shallow grouper encounters. Try dives and Open Water practical sessions run on the adjacent Montgri coast, not inside the reserve.
A 5 mm hooded suit is the summer minimum. A 3 mm is not enough even in July: bottom temperatures drop to around 17 C from 20 m down. In June or October, bring a 7 mm semi-dry. Drysuit rental is available through some centres.
July and August for peak pelagics and warmest water. September for the sweet spot of warm water, best visibility window and thinner crowds. Avoid the 11 and 24 September Catalan holidays if you want empty boats.
Yes. Snorkelling inside the reserve needs no permit. Several L'Estartit centres run guided snorkel tours for 30 to 36 EUR. Groupers, sea bream and octopus are visible from the surface in sheltered bays.
The dusky grouper density here is exceptional even by protected-area standards. The combination of cave systems, deep gorgonian walls and an accessible artificial-reef wreck inside one compact archipelago is unusual. Comparable reserves like Port-Cros have similar biodiversity but less concentrated dive infrastructure.
Weather permitting. The 110 m ferry was sunk as an artificial reef in 1991 and has broken into roughly twenty pieces after storms. Top of wreck at 27 m, bottom at 35 m; advanced certification only, and centres only run it on calm days.
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