Sancti Petri (Bajo del Medio) – Andalusia – Atlantic Coast (Cádiz & Huelva)
Site Overview
Sancti Petri near Chiclana is an underwater archaeological zone where Roman and Phoenician amphorae and anchors are scattered across the seabed, protected as heritage. The Bajo del Medio pinnacle above the site holds groupers, barracuda and bream, blending history with healthy reef life. Intermediate divers explore the area with care not to disturb the artefacts, and the clear Atlantic water makes it a unique dive. Sancti Petri is a fascinating mix of culture and marine life. The site rewards careful planning, good buoyancy and respect for Spain’s marine-protection rules, and remains a favourite among divers who value dramatic volcanic or Mediterranean scenery, historic wrecks and rich marine life across a long, varied season. The site rewards careful planning, good buoyancy and respect for Spain’s marine-protection rules, and remains a favourite among divers who value dramatic volcanic or Mediterranean scenery, historic wrecks and rich marine life across a long, varied season. The site rewards careful planning, good buoyancy and respect for Spain’s marine-protection rules, and remains a favourite among divers who value dramatic volcanic or Mediterranean scenery, historic wrecks and rich marine life across a long, varied season. The site rewards careful planning, good buoyancy and respect for Spain’s marine-protection rules, and remains a favourite among divers who value dramatic volcanic or Mediterranean scenery, historic wrecks and rich marine life across a long, varied season.
Dive Briefing
"Boat to the zone and descend to the pinnacle at 6-14 m, circling the reef for groupers and scanning the sand for amphorae without touching. Ascend gradually with a safety stop near the entry. Follow your guide closely, monitor your air and thermal comfort, watch your depth and complete a safety stop before exiting at the designated point to keep the dive safe and enjoyable. Follow your guide closely, monitor your air and thermal comfort, watch your depth and complete a safety stop before exiting at the designated point to keep the dive safe and enjoyable. Follow your guide closely, monitor your air and thermal comfort, watch your depth and complete a safety stop before exiting at the designated point to keep the dive safe and enjoyable. Follow your guide closely, monitor your air and thermal comfort, watch your depth and complete a safety stop before exiting at the designated point to keep the dive safe and enjoyable."
Signature Marine Life
Grouper
Epinephelus marginatus
Best: Year-round
Barracuda
Sphyraena viridensis
Best: Year-round
Moray Eel
Muraena helena
Best: Year-round
Wrasse
Labrus spp.
Best: Year-round
Bream
Diplodus spp.
Best: Year-round
Safety & Hazards
- Fragile artefacts
- Boat traffic in the bay
- Sun exposure
- Slippery slope
- Limited shelter
Traveler Notes
Who is this for?
Ideal for intermediate divers and history enthusiasts who want an archaeological site with healthy reef life. It suits photographers and those valuing heritage over big marine life. The protected status makes it a calm, meaningful dive. It suits confident divers who value dramatic scenery, walls, caves, wrecks and rich marine life, and who plan their trips around the best seasonal and slack-water windows for their certification level. It suits confident divers who value dramatic scenery, walls, caves, wrecks and rich marine life, and who plan their trips around the best seasonal and slack-water windows for their certification level.
For Non-Divers
Non-divers can enjoy boat trips, coastal walks, beaches and local cuisine while divers explore the site.
Quick Stats
Dive Logistics
- Sancti Petri Diving
- Cádiz Dive
Photography Info
Best for: macro, wide_angle
Nearby Stay
Local Dive Lodge
Chiclana de la Frontera • 3km away
Coastal Guesthouse
Chiclana de la Frontera • 5km away