Diving in Costa del Montgrí

The Montgrí massif plunges into the sea between L'Estartit and L'Escala as a wall of limestone that keeps going underwater, up to 50 m below the surface, riddled with crevices, arches and tunnels that millennia of waves have carved out of the rock. Where the Illes Medes offshore are the aquarium, the coast is the cathedral. Sixteen submarine itineraries are catalogued along it by the park authority, covering everything from sheltered course-friendly walls to two wrecks you can actually plan a trip around.

The signature dives organise themselves around three categories. The wrecks are the headline: the Reggio Messina at around 32 m, a former ferry/tug sunk after the 1992 Barcelona Olympics and now the coast's marquee dive, and the Marmoler (Avenire), a 1971 sinking near Cala Montgó at around 42 m with its cargo of marble blocks still visible. Between them sits the tunnel and cave cluster: Cala Pedrosa's roughly 60 m natural tunnel with its light-chimney, the "Coves de la Cala Viuda" and the neighbouring Cambres tunnels, some with internal air chambers. Punta Salines is the coast's one moment of genuine Medes-scale scenery: a gorgonian wall of Paramuricea clavata with a sandy slope shallow enough for courses.

What the coast is not is the Medes. Large resident groupers concentrate inside the reserve; the coast gets occasional, wary encounters rather than the habituated animals offshore. In exchange, it offers lighter diver traffic, better geology, and the kind of macro life that makes night dives worthwhile: nudibranchs, flatworms, scorpionfish and spiny lobsters across the rocky-to-sandy transitions.

The coast's regulatory position is simpler than the Medes's: it sits inside the Parc Natural del Montgrí, les Illes Medes i el Baix Ter but outside the strict marine reserve. No reserve permit, no 5.30 EUR/dive park tax and no daily quota apply. General park rules still do: the Decálogo del submarinista responsable limits cave penetration to the natural-light zone, mandates low-impact buoyancy and bans feeding or touching marine life. Anchoring is restricted to mooring buoys across the park to protect the posidonia seabed. Dive insurance is compulsory under Spanish regulation regardless of where you dive.

Access is from L'Estartit harbour for most of the coast and from L'Escala for the southern end (Marmoler, Reggio Messina from the south). Torroella de Montgrí also hosts a technical-specialist operation that runs boats out of L'Estartit. Boat times to coast sites run 10-25 minutes, shorter than most of the region's diving. Girona airport is about 40 km away, Barcelona roughly 125 km and 2.5 hours by car.

The best planning move for a multi-day L'Estartit trip is alternation: the coast gives the week variety when the Medes would otherwise become a grouper-photo marathon. It also becomes the default option on tramontana days, when the north wind closes the Medes crossing but leaves south-facing coast sites diveable.

Limestone massif continuous with the Medes Islands: both share a single geological body separated by erosion. Cliffs rise up to 100 m above the sea and plunge up to 50 m below, broken by capes, coves, islets, natural arches and submerged caves. Coralligenous formations and posidonia meadows carpet the rocky-to-sandy transitions.