Park page for the sheltered bay-side dive, tunnel route, and protected-area rules.
Illa Pedrosa is a boat dive with a broad tunnel and rocky outer route.
Illa Pedrosa is a boat dive with a broad tunnel and rocky outer route.
Park-controlled access and the overhead section make this a local-operator dive rather than a self-guided shore entry.
Illa Pedrosa is a boat-accessed Montgri coast dive built around a broad tunnel through the island and a rocky outer route. The tunnel is the signature feature, while the outside circuit gives a simpler option for divers who stay off the overhead section. Expect protected-reserve scenery with sponges, coralligenous growth, octopus, moray eels, nudibranchs, and other Mediterranean life. It is best planned with a local operator in settled conditions and a clear buoyancy plan.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
18m - 30m
Depth Note
The tunnel entrance starts around 18 m, the exit sits around 24-30 m, and the route continues deeper in places.
Best Season
March to December, with the warmest water and strongest marine-life window from July to September.
Typical Conditions
Usually calm Mediterranean conditions in settled weather, with a more comfortable feel in summer and more exposure at the tunnel exits on windier days.
Site conditions, restrictions, and access requirements.
Site Conditions
Safety Notes
Keep a close buoyancy plan for the overhead section, and use a light if you want to inspect the tunnel more closely. The protected setting still deserves a conservative profile.
Access Restrictions
Access is managed through authorized dive centers and park rules; the tunnel section is for divers comfortable with overhead sections.
Legal Notes
The site sits inside the Montgri, Medes Islands and Baix Ter Natural Park, where dive itineraries are regulated and marine-life protection rules apply.
Community notes to help plan your visit.
Scuba Diving
This is a scuba-first tunnel dive with a broad overhead section, a chimney-like rise, and an easier outer route for divers who stay outside the tunnel.
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
Park page for the sheltered bay-side dive, tunnel route, and protected-area rules.
Tourism page for the reserve, marine itineraries, and habitat context.
Local dive-center page with boat access, tunnel depth, and typical species.
Independent guide with visibility, calm-water, and access context.
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