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Scuba diving at Architiello di San Domino in Tremiti Islands
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Architiello di San Domino

GREAT
Tremiti IslandsBoat
About This Site
Architiello di San Domino is the archipelago's signature natural sea arch, a limestone span carved into the cliffs of the island's western shore near Punta Secca, the Ripa dei Falconi and the Grotta del Bue Marino. It is famous as a landmark above and below the water: a photogenic, colourful reef tumbles from the arch down a sloping rock face into clear blue water, offering a gentler, more recreational profile than the deep offshore Secche. With short boat runs from the San Domino harbour and water clarity that the Tremiti are renowned for, it is one of the most-dived recreational sites in the marine reserve.

Difficulty

Intermediate

Max Depth

24m

Type

Boat

Typical Visibility

20m

Conditions Summary

Best time today

1PM - 7PM

GREAT

Best day in forecast

Today

GREAT

2026-07-11

Community-reported visibility

n/a

Warnings for today

None

The arch and wall sit on the open western coast of San Domino, facing the Adriatic toward the sunset, so the western arc (WSW, W, WNW) is fully exposed, with the SW and NW shoulders wide open too. The island bulk to the east completely shelters the landward sectors, so the NE Bora and the long-fetch SE Scirocco/Jugo — normally the biggest Adriatic seas — arrive shadowed. In this microtidal Mediterranean setting waves are wind-driven over open fetch: the working hazards on this face are the SW Libeccio, the NW Maestrale and any straight westerly, which build short, steep chop and can cancel diving when they blow.

NNEESESSWWNW
Protected
Partially Exposed
Exposed
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Nearby Dive Sites
Secca di Punta Secca (Gli Archi)Scoglio del CorvoSecca delle VedoveStatua di Padre Pio (Gli Scoglietti)Secca del PignoGrotta del Bue Marino