Explore a rare underwater Roman resort on a double dive from Baia. Guided routes take certified divers past mosaics, columns, and statues in shallow, well-preserved ruins just off the Gulf of Pozzuoli.
More ways to explore the area's outdoor wonders
You step off the quay at the Port of Baia with salt on your lips and a harbor wind that seems to push you toward the water. The crew greets you at the Subaia hub, gear is checked, and in less than ten minutes the boat nudges into the blue. At depths of 5–10 meters, columns, mosaics, and marble fragments sit quietly beneath the surface; the sea pulls light across them like a slow shutter.
Difficulty
moderate
Duration
4 hours
Fitness Level
Comfortable swimming ability and basic cardiovascular fitness; must be comfortable equalizing and handling open-water conditions.
Wildlife
History
Baiae was a Roman thermal resort whose coastal villas and temples subsided over centuries due to bradyseism, leaving an underwater archaeological park unique to the Mediterranean.
Conservation
Dives operate under site-management rules to limit contact and anchor damage; divers should avoid touching artifacts and follow guide instructions to reduce sediment disturbance.
Reserve your spot on the Double Dive Tour in Baia Submerged Park for Certified Divers today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring your dive computer
Tidal flow and site depths to 10m make a dive computer useful for monitoring no‑stop limits and ascent rate.
Use a personal mask
Masks provided can fit differently; a familiar, well-sealed mask reduces leaks and improves comfort underwater.
Mind buoyancy around ruins
Maintain neutral buoyancy to avoid contact with fragile mosaics and to keep sediment from reducing visibility.
Check local weather windows
Operators cancel in rough seas; aim for morning departures when winds and swell are usually lower.
Dive computer
Monitors depth, bottom time, and ascent rate for safe profiles on multiple dives.
Personal mask and snorkel
A well-fitted mask reduces leaks and improves comfort during surface intervals.
Wetsuit (3–7mm depending on season)
Thermal protection recommended in spring/fall; operators provide suits but personal fit is best.
spring
Towel and dry bag
Keeps you warm and protects electronics between dives and on the return to shore.