Sofas on which diners reclined in the dining room of the "Ninfeo di Claudio" site.
Polychrome mosaic from the "Terme del Lacus" underwater site. Mosaic representing colored flowers with white, blue and orange tiles.
Salps swimming near the black and white mosaic of the "Villa a Protiro" site, a mosaic depicting Roman shields, called "pelte".
Divers on the surface, ready to dive.
Diver in neutral buoyancy during safety stop.
Couple of divers underwater posing for photo holding hands.
Couple of divers underwater holding hands, arms open posing for photo.
Diver near the "Waves" mosaic of the "Portus Julius" site.
Divers posing in front of the statue of the god Dionysus of the "Nymphaeum of Claudius" site.
Shoal of barracuda.
Redfish on a rock.
Brown grouper leaning against a wall full of yellow sea fans.
Front photo of a green grouper.
Side photo of a brown grouper.
Statue of the god Dionysius from the "Nymphaeum of Claudius" site.
Diver swimming near a column of the "Portus Julius" site.
Dogfish egg resting on red coral.
Brown and orange lobster emerging from its burrow.
Statue of the daughter of Emperor Claudius, Octavia Claudia, from the "Nymphaeum of Claudius" site.
Semi-circular signs on the ground of the entrance "gate" of the "Villa a Protiro" site.
Guided Diving Tour in Baia Underwater Archaeological Park
From € 45.00
Listing ID : 52718

Activity

Duration3 Hours
Group SizeSmall Group
Starts AtDiving Center, Baia, Naples
LanguagesEnglish, Spanish, Italian
Underwater Archaeology · Phlegrean Fields · Certified Divers

Dive the Sunken Roman City of Baia: Archaeological Park Guided Scuba Experience

Descend into the ancient world beneath the waves of the Phlegrean Fields, where Rome's most opulent resort city waits four metres below the surface.

A scuba dive in the Archaeological Park of Baia is one of the rarest cultural experiences available to certified divers anywhere in the Mediterranean, placing you face-to-face with imperial mosaics, marble floors and intact Roman statuary in their original positions on the seafloor.

The ancient city of Baia was the preferred retreat of Roman emperors and senators, celebrated for its thermal baths and luxury villas that lined the volcanic coast. Over centuries, the geological phenomenon known as bradyseism gradually lowered the ground level of the entire Phlegrean Fields area, slowly submerging the coastal buildings until they came to rest roughly four metres beneath the surface of the Bay of Naples.

Today the sea has acted as a natural preservative, protecting mosaic pavements, sculptural fragments and architectural structures that remain largely intact. The Archaeological Park manages the site through dedicated visit routes, each designed to be completed in approximately 45 minutes, ensuring both conservation of the ruins and a focused, unhurried experience for divers.

Your Divemaster accompanies you throughout the dive, providing continuous guidance and contextual information about the structures you pass. After surfacing, the diving centre offers showers, changing rooms and the chance to have the dive logged and stamped in your logbook with the centre's distinctive archaeological stamp.

Tour Highlights

Explore submerged Roman villas resting at approximately four metres depth, preserved in exceptional condition by the waters of the Bay of Naples.

Observe ancient Roman mosaics and marble floors in situ, exactly where they were laid more than two thousand years ago.

Encounter original statues and architectural fragments within the protected boundaries of an active archaeological site.

Dive inside one of the world's few accessible underwater archaeological parks, managed by Italy's Ministry of Culture.

Navigate a structured visit route with a certified Divemaster who provides expert guidance throughout the 45-minute dive.

Witness first-hand the effects of bradyseism, the volcanic ground movement that shaped the entire Phlegrean Fields coastline over millennia.

Receive an official logbook stamp from the dive centre, documenting your visit to this unique UNESCO-recognised heritage site.

How the Experience Unfolds

1
Arrival and Briefing at the Diving Centre

Upon arrival you attend a dedicated briefing covering the history of the ancient city of Baia, the geology of the Phlegrean Fields and the specific visit route you will follow during the dive. Equipment rental is arranged at this stage for those who require it.

2
Boat Transfer to the Archaeological Park

A short five-minute boat journey takes you directly to the entrance of the underwater Archaeological Park of Baia. Your Divemaster conducts final safety checks and equipment verification before entry.

3
Guided Dive Through the Sunken Ruins

You descend to approximately four metres and follow one of the park's designated visit routes for around 45 minutes. The Divemaster guides you past mosaics, statues, marble-paved floors and the structural remains of Roman villas while the local marine life moves freely through the ruins around you.

4
Return to the Diving Centre

After surfacing you board the boat back to the diving centre. Showers and changing rooms are available, and refreshments are typically on hand. Your logbook entry is completed and stamped before you depart.

What Is Included and Excluded

Included

  • Guided 45-minute scuba dive along a designated archaeological route
  • Certified Divemaster accompaniment throughout the dive
  • Pre-dive briefing on the history and geology of Baia
  • Boat transfer to and from the Archaeological Park (approx. 5 minutes each way)
  • Full scuba equipment rental if required
  • Access to showers and changing rooms post-dive
  • Official logbook stamp from the diving centre

Not Included

  • Personal swimwear, towel and dry clothing
  • Travel insurance
  • Gratuities for the Divemaster
  • Transport to and from the diving centre

Important Information

This experience is open exclusively to certified divers holding a minimum Open Water Diver qualification or an equivalent certification from a recognised agency such as PADI, SSI or NADD. Proof of certification is required at check-in.
Duration
Approximately 3 hours total, including briefing, boat transfer and a 45-minute dive. The exact timing of your dive slot is determined by the Archaeological Park's visit route schedule.
Meeting Point
The diving centre located in Baia, in the municipality of Bacoli, on the northern shore of the Bay of Naples. Precise address details are provided at booking confirmation.
What to Bring
Swimwear, a towel and a change of dry clothing are the only personal items required. Scuba equipment is available for rental at the centre if you do not bring your own. Your certification card must be presented at check-in.
Cancellation Policy
Cancellation and refund conditions are outlined at the time of booking. Dives may be rescheduled or cancelled by the operator in the event of adverse sea conditions or park closure for reasons beyond the operator's control.
Accessibility
Participation requires the physical ability to complete an open-water scuba dive to approximately four metres depth. Guests with specific health conditions should consult a physician and inform the operator prior to booking.
Age Range
Participants must hold a valid scuba certification at minimum Open Water Diver level. Minimum age requirements follow the certification standards of the issuing agency. Please confirm with the operator at the time of booking.

Ready to Dive into Roman History?

Secure your place on one of the most distinctive dives available in the Mediterranean and explore the submerged streets of ancient Baia with an expert guide at your side.

Book Now

Frequently Asked Questions

What certification level do I need to join this dive?▼
You must hold a minimum Open Water Diver certification or an equivalent qualification issued by a recognised training agency such as PADI, SSI or NADD. You will be asked to present your certification card at the diving centre before the dive begins.
Do I need to bring my own scuba equipment?▼
No. The diving centre can provide all necessary scuba equipment for participants who do not have their own gear. You only need to bring swimwear, a towel and clothing to change into afterwards.
How deep is the dive at the Archaeological Park of Baia?▼
The submerged Roman structures are located at approximately four metres depth, making this a relatively shallow dive that is accessible to divers at the Open Water Diver level and above.
How long does the actual underwater portion of the experience last?▼
The dive itself lasts approximately 45 minutes, following one of the designated visit routes established by the Archaeological Park. The total experience including briefing and boat transfers is around three hours.
Why is the ancient city of Baia underwater?▼
Baia sits within the Phlegrean Fields, a large active volcanic area west of Naples. A geological process called bradyseism caused the ground level to gradually sink over centuries, submerging the coastal villas and structures to their current depth of around four metres.
Will my dive be recorded in my logbook?▼
Yes. After the dive your Divemaster will log the experience in your logbook and add the diving centre's dedicated stamp, which is specific to the Archaeological Park of Baia.
Underwater ArchaeologyScuba DivingBaiaPhlegrean FieldsRoman RuinsBay of NaplesArchaeological ParkGuided DiveCultural ExperienceOpen WaterBacoliBradyseism
Last updated: 2025-07-10 | Product ID: baia-underwater-dive-001

Activity

Availability

You can book up to the start time, as long as there are places remaining. Book now to guarantee your spot.

Additional Information

Physical: Wheelchair Not accessible

Duration

3 hours

Languages

English - Speaking Guide

Spanish - Speaking Guide

Italian - Speaking Guide

Additional Information

Electronic. Show the voucher on your phone.

Cancellation Policy

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Meeting Point

Complete Operator information, including local telephone numbers at your destination, are included on your Confirmation Voucher. Our Product Managers select only the most experienced and reliable operators in each destination, removing the guesswork for you, and ensuring your peace of mind.

End Point

Complete Operator information, including local telephone numbers at your destination, are included on your Confirmation Voucher. Our Product Managers select only the most experienced and reliable operators in each destination, removing the guesswork for you, and ensuring your peace of mind.

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