Diving in Illes Medes

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

Overview

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.

Planning your visit

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.

Geology & underwater terrain

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.

Top Dives

The must-do dives in this area, picked by our editors.

  1. 1

    Experienced divers chasing the signature open-water pinnacle of Illes Medes with close grouper encounters and pelagic fly-bys

  2. 2

    Photographers and recreational divers wanting a naturally lit Mediterranean cavern swim-through with optional advanced wall extension

  3. 3

    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

  4. 4

    Open Water divers and photographers wanting a relaxed, fish-rich Medes dive with rare Posidonia meadow habitat

  5. 5

    Experienced divers chasing pelagic encounters and a deep gorgonian wall on the exposed southern edge of Illes Medes

Dive sites map

Diamonds mark nearby dive areas — tap to explore.

Dive sites in Illes Medes

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Dofí Nord

Dofí Nord

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.

Moderate30mBoatCaveTunnel
Carall Bernat

Carall BernatFeatured

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

Moderate15–30mTech to 50mBoatPinnacleWall
El Salpatxot

El Salpatxot

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

Easy25mBoatSlopeReef
Dofí Sud

Dofí Sud

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.

Moderate27mBoatCaveTunnelReef
Tascó Petit

Tascó Petit

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

Moderate15–30mTech to 45mBoatReefWallCanyon
Ferranelles

Ferranelles

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.

Moderate38mBoatReefWall
Pedra de Déu

Pedra de Déu

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.

Moderate15–30mTech to 44mBoatWallPinnacle
La Vaca

La Vaca

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

Easy12–25mTech to 45mBoatTunnelWallCave
Pota del Llop

Pota del Llop

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.

Advanced25–40mTech to 50mBoatWallCave
Tascó Gros

Tascó Gros

Large 210 m islet at the southern Illes Medes; gorgonian walls, easy circumnavigation, and a Garbí-sheltered buoy that holds when others blow out.

Easy40mBoatPinnacleWallReef

Dive centres in Illes Medes

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Book online or contact a centre that dives this area.

Aquatica Illes Medes logo

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.

SSI6 services5 languages
Calypso Diving Estartit logo

Calypso Diving Estartit

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.

PADI5 services8 languages
Costa Brava Divers logo

Costa Brava Divers

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.

PADI6 services5 languages
El Rei del Mar logo

El Rei del Mar

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.

PADI / SSI5 services5 languages
La Sirena logo

La Sirena

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.

SSI5 services4 languages
Les Illes Hotel & Diving logo

Les Illes Hotel & Diving

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

PADI / SSI / CMAS6 services5 languages
Oceansub Estartit logo

Oceansub Estartit

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.

PADI5 services5 languages
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Frequently Asked Questions

Do I need to book my Medes dive in advance?
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.
How much does the park permit cost?
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.
Which Medes site should I dive first?
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.
Why are the groupers here so tame?
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.
Is Medes good for beginner divers?
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.
What wetsuit do I need?
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.
When is the best time to dive Illes Medes?
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.
Can I snorkel at the Medes without a dive permit?
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.
How does Medes compare to other Mediterranean reserves?
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.
Is the Reggio Messina wreck divable?
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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