Diving Ustica: The Volcanic Island That Created Italy's First Marine Reserve and Still Has the Best Underwater Visibility in the Mediterranean
Autore: La Redazione di www.tourleaderpro.com
Last updated: April 2026. Complete guide to diving at Ustica — dive sites, marine reserve zones, dive centers, seasonal conditions, and the island itself.
Ustica is a volcanic basalt island 60 km northwest of Palermo — black rock rising from the Tyrrhenian Sea, ringed by submarine lava flows that create a topography of walls, caves, arches, and tunnels extending from the surface to beyond 50 meters. In 1986, Ustica became Italy's first marine protected area (Area Marina Protetta) — a designation that has protected the waters for almost four decades and produced the result it was designed to produce: exceptional biodiversity, extraordinary water clarity (visibility regularly exceeds 30-40 meters), and populations of large fish (grouper, amberjack, barracuda, dentex) that have returned to numbers not seen in unprotected Mediterranean waters.
The island has a permanent population of approximately 1,300 people and receives approximately 50,000 visitors per year — manageable numbers that maintain the authentic character of the community. Ustica is not a resort island; it is a small fishing and farming community that happens to have extraordinary diving. The single village has a handful of restaurants serving daily-caught fish, a cooperative dive center, several small hotels, and the Museo Archeologico Sottomarino (Underwater Archaeological Museum) that displays material from the ancient maritime traffic passing through these waters.
Ustica Dive Sites
Punta Gavazzi and the West Coast Walls
The western coast of Ustica has the most dramatic underwater topography: vertical basalt walls descending from 5 meters at the surface to 50+ meters at the base, covered in gorgonian sea fans, sponges, and red coral at depth. The wall dives at Punta Gavazzi are suitable for intermediate and advanced divers; the shallow sections (5-20 meters) are appropriate for beginners and snorkelers. The water temperature ranges from approximately 14°C in winter to 28°C in August; June-October is the standard diving season for comfortable temperatures without a drysuit.
Secca della Colombara
A seamount (secca) rising to approximately 8 meters below the surface, covered in marine life and surrounded by open water. The Colombara is one of Ustica's signature dives for large pelagic fish: amberjack (ricciola) in large schools, dentex, and the occasional group of barracuda are reliably present. The dive involves a descent from the seamount's crest into open water alongside the structure — a blue-water experience that requires some comfort with open ocean diving.
Grotta Azzurra and the Cave Dives
The northern coast of Ustica has multiple cave and tunnel systems accessible underwater. The Grotta Azzurra (Blue Grotto) has both a surface entrance (accessible by boat) and an underwater entrance at approximately 12 meters, with the interior illuminated by the penetrating surface light — similar in optical effect to the Capri Blue Grotto but without the tourist infrastructure. Several tunnel systems connect multiple openings and are suitable for divers with overhead environment experience.
Underwater Archaeological Trail
The Area Marina Protetta has established a self-guided underwater archaeological trail marking ancient anchors, amphora fragments, and other debris from the ancient maritime trade routes that passed Ustica for 2,500 years. The trail is at 10-18 meters depth and accessible to recreational divers; the in-situ remains (the objects remain on the seabed, not collected) give a direct experience of Mediterranean maritime archaeology that few dive destinations offer.
Q&A: Diving Ustica
How do I get to Ustica from Palermo?
Hydrofoil (aliscafo) from Palermo's Molo Beverello or the Palermo Porto terminal: approximately 1 hour, services operated by Siremar and Liberty Lines. Ferry (traghetto): approximately 2h 30min. Daily services in summer; frequency reduces significantly in winter. In rough weather (the Tyrrhenian winter can produce significant swells), the hydrofoil service is sometimes suspended — build flexibility into travel plans if visiting outside the May-October window.
What certification level do I need to dive Ustica?
The wall dives of the west coast are suitable from Open Water (OW) level for the shallow sections, Advanced Open Water (AOW) or equivalent for dives below 18 meters. The cave systems require specific overhead environment training (CMAS 3* or PADI Cavern/Cave diver). The seamount dives at Colombara are suitable for AOW divers comfortable in open water. The local dive centers (Centro Sub Ustica, Orca Diving Center) offer full rental equipment, guided dives, and instruction for non-certified visitors.
Is Ustica's marine reserve well-enforced?
Yes — the Riserva Marina di Ustica has three protection zones (A, B, C) with progressively restricted access. Zone A (the most protected section of the northwest coast) prohibits all anchoring, swimming from private boats, and recreational diving without authorization. Authorized dive centers can access Zone A for guided dives; independent diving in Zone A is prohibited. The enforcement is active and fines are issued. The marine reserve's enforcement is precisely why the fish populations have recovered to the levels that make Ustica diving exceptional.
Ustica Beyond Diving: The Island Itself
Non-divers have full days on Ustica: the coastal path circling the island takes 4-5 hours and offers views of the volcanic coastline and, on clear days, the Sicilian mainland and the Aeolian Islands to the east. The Bronze Age village of Faraglioni (inland from the main village, excavated from the volcanic soil) is one of the most complete Bronze Age settlement sites in the Tyrrhenian islands. The church of San Bartolomeo in the main village has a remarkable baroque interior for an island of this scale. And the island's food — fresh tuna, dentex grilled over embers, the local lentils grown in volcanic soil — is worth visiting for on its own terms. The restaurant Hibiscus and the various family-run trattorie in the village produce daily menus entirely dependent on what the fishing boats brought in that morning.
What Nobody Tells You About Ustica
The International Review of Underwater Photography (Rassegna Internazionale di Fotografia Subacquea) is held at Ustica every year in late July — a competition and exhibition that brings underwater photographers from across the Mediterranean to the island. If you are an underwater photographer or interested in the genre, visiting during this event gives access to exhibitions, screenings, and a community of serious underwater photography practitioners in one of the finest marine environments in the Mediterranean.
Internal Links
- Isole Tremiti: Adriatic Italy's Best Diving Alternative
- Tremiti Islands Complete Diving Guide
- Lampedusa: Italy's Southernmost Diving and Snorkeling
- Cefalù: North Sicily Beach Base Near Ustica Ferries
- Sicilian Fishing Villages: The Community Ustica Represents
- Palermo Transport: Getting to the Port for Ustica Boats
- Western Sicily Complete: From Marsala to the Ustica Ferry