Mallorca · about 1 km from Portocolom
Cova des Coll
Closed to divers
Closed to recreational cave divers. Natura 2000 cave (ZEC): the Balearic government only grants access for activities backed by a scientific institution or university, or carried out on behalf of a public administration. Some entrances are closed off.
- Max depth15 m
- CertificationFull cave
- SpecialSidemount
Diving and fills
Dive here with
No dive centre guides here yet. Do you dive here with guests? Add your centre for free →
Fills nearby
- Fill stationSkualo Porto CristoUnknown — ask about fills (air/nitrox); no trimix mentionedRoute ↗
- Fill stationZOEA MallorcaNot stated — askRoute ↗
- Fill stationBluewater MenorcaAir (per its SSI listing); nitrox: askRoute ↗
Now at Cova des Coll
What it looks like
All 1 videos and posts
Videos and posts
From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.
Search for more onYouTube ↗Instagram ↗Facebook ↗
Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
An anchialine maze under the houses of Portocolom, where the rock roof is locally under 2 m thick. There are haloclines in the top 10 m; the water is ~20 °C near the surface and ~19 °C deeper (measured in October).
Profile and sections
An anchialine maze under the houses of Portocolom, where the rock roof is locally under 2 m thick. There are haloclines in the top 10 m; the water is ~20 °C near the surface and ~19 °C deeper (measured in October). The floor is covered in fine, clay-rich silt. The largest chamber is the Sala Benvinguda, 45 × 30 m.
The fauna is important: 29 crustacean species, of which 4 groundwater species were new to science. A housing project on the former convent site is seen as a threat (2025).
- Depth and profile
- Max -15 m (Galeria Inferior). 7,020 m surveyed: 5,529 m underwater, 765 m of water with air chambers, 726 m dry.
- Configuration
- Phreatic tubes 0.9–1.8 m high in a maze: sidemount or small cylinders; backmount and CCR only if compact.
- DPV: Not DPV-suitable (estimate)
- Low tubes and a maze: no scooter terrain.
Who can dive where
- At least Full cave
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 15 m (trimix or deco may be needed)
- Experienced divers only
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Two natural entrances: a submarine one in Portocolom bay (es Rivetó) and an inland one in a collapsed passage, plus two dug wells. An old British report mentions a short, awkward dry section before the first sump.
Around Cova des Coll
Fills3 fill stations · nearest 14 km
Skualo Porto Cristo
Passeig des Cap des Toll 11, 07680 Porto Cristo
Unknown — ask about fills (air/nitrox); no trimix mentioned
Ask
PADI 5-star centre in the reference town; boat dives and boat trips to the Cova des Coloms sea cave. No tec or cave-diving offer found.
ZOEA Mallorca
Club Nàutic Santa Ponsa, Santa Ponsa (also Via Creu 46, 07180, Palma)
Not stated — ask
1 Apr–31 Oct daily; 1 Nov–31 Mar weekends and holidays only
Large centre in the south-west; daily boats to >30 sites, incl. the El Toro, Malgrats and Dragonera reserves (Cueva de la Ventana). Handy if you stay on the west side.
Bluewater Menorca
Carrer Llevant, local 1-3, 07769 Cap d'Artrutx (Ciutadella)
Air (per its SSI listing); nitrox: ask
Website: daily 8:00–18:00; SSI: Mon–Sat 8:30–18:00
Own boat from Cala'n Bosch; guided dives in Pont d'en Gil (~40 min by boat). Freediving too.
News
- Sea caves, unprotected against development on the Balearic coast: "They are the harshest attacks" ↗
- Luxury apartments threaten the largest underwater cave in Spain: "It would be madness" ↗
Access and rules change: check what applies locally right before your trip. Source: GDELT Project and the news feeds of diving magazines. Search for more news ↗ Searched automatically, last on 13 Nov 2026.
More of the latest in Mallorca (Spain): conditions, closures and news →Going to Mallorca with your team?
Marcel finds the sites that match your team's certifications.
Plan a trip