Boat-only site page with all-levels framing and local operator support.
Easy boat dive on a rocky bar off Barcelona-Maresme.
Easy boat dive on a rocky bar off Barcelona-Maresme.
Boat access is operator-led from the Port Balis / Llavaneres area.
El Gruñon is an easy boat dive on a rocky bar off the Barcelona-Maresme coast. The route is straightforward, with rock pockets, seagrass patches, and plenty of small-life hunting along the way. It suits relaxed planning more than complex navigation, and it is happiest in settled sea conditions with a torch for the holes and a flexible boat plan.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
14m - 23m
Depth Note
Rocky bar route described as NE–SW with depths ranging from 14 m to 23 m.
Best Season
Late spring through early autumn.
Typical Conditions
Straightforward rocky-bar diving with local life in the holes and around the rocks; conditions are shaped more by sea state than by route complexity.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Bring a flashlight for exploring rocky holes.
Access Restrictions
Boat access only; plan around operator scheduling and sea state.
Legal Notes
Follow local boating and diving rules and any instructions from the boat crew.
Community notes to help plan your visit.
Scuba Diving
Suitable for Open Water divers; recommended to carry a flashlight.
Freediving
Not a freedive-first site. The boat logistics and rocky-bar profile make it better suited to scuba than casual breath-hold sessions.
Snorkeling
Snorkelling is limited by the boat format and is only worth considering on very calm days.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Boat-only site page with all-levels framing and local operator support.
Costa Barcelona / Maresme diving and water-activity context.
Easy rocky-bar route, Open Water fit, and torch recommendation.
Know this site? Improve Spot Details.

Boat dive over a rocky bar with easy navigation and small-life pockets.

El Trompo is a beginner-friendly boat dive off Mataró.

El Negre is a boat-access rocky bar near Mataró.

El Tortu is a boat dive on a rocky bar off Port Balis.

Mataró boat dive on the Barra del Negre's El Triangle section.