Local operator dives the reserve in small groups with local equipment and lists El Bajón de Alegranza among the available sites.
El Bajón de Alegranza is a deep boat dive off Alegranza.
El Bajón de Alegranza is a deep boat dive off Alegranza.
Access is typically handled by a local La Graciosa dive center or operator boat.
El Bajón de Alegranza is a submerged volcanic ridge off Alegranza island in the Chinijo Archipelago, built around stepped terraces, ridge walls and open Atlantic water. It is a boat dive for experienced teams who want current-assisted exploration, big pelagic encounters and a site that feels more serious than a simple reef swim.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
12m - 35m
Depth Note
Boat entry begins over a shallow volcanic platform around 12-15 m, with the ridge dropping to about 35 m.
Best Season
March through October for the most consistent conditions.
Typical Conditions
Stepped volcanic terraces, ridge walls and open Atlantic water with current-driven movement.
Hazards, restrictions, and access requirements.
Key Hazards
Access Restrictions
Boat only, advanced certification and reserve conditions apply; this is not an easy entry site.
Legal Notes
Follow reserve rules and operator briefings; access in the Chinijo reserve is controlled and conditions can change quickly.
Community notes to help plan your visit.
Scuba Diving
Good for advanced scenic diving, ridge navigation and open-water skills.
Freediving
Not a freedive site.
Snorkeling
Not a snorkeling target.
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
Local operator dives the reserve in small groups with local equipment and lists El Bajón de Alegranza among the available sites.
Submerged volcanic ridge with boat access, 12-35 m depth range, 15-25 m visibility, 0.5-1.5 knot current and advanced certification.
Community video references mantas in the Bajón de Alegranza and shows the site is used for large pelagic encounters.
Official tourism page describes the Chinijo reserve, specialist dive-center support in Caleta de Sebo and 774 recognized species in the marine reserve.
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