dive.visitazores.com · Official Tourism
Official Azores diving overview with volcanic and clear-water context.
O Arco
Boat-accessed Azores arch dive with volcanic rock and clear water.
Scuba DivingSnorkelingBoatIntermediate7m - 19m
Reef
Local operator required
A boat run from Ponta Delgada marina is the normal way to visit the site.
O Arco is a Ponta Delgada boat dive centered on a volcanic arch with shallow recreational depths.
About O Arco
O Arco near Ponta Delgada is a boat-accessed Azores dive site built around a volcanic arch and shallow rock terrain. The site is known for clear Atlantic water, easy boat access, and a profile that works for relaxed exploration rather than a deep or technical day. Divers come for the arch itself, the surrounding volcanic rock, and the mix of seahorses, stingrays, nudibranchs, and wrasse around the structure.
Safety & Access
Site Conditions
Overhead environment
Safety Notes
Treat the arch as an overhead feature and keep a conservative line through or around it.
Access Restrictions
Boat access from Ponta Delgada marina; stay conservative around the arch if you are not trained for overhead features.
Legal Notes
Do not treat the arch as a casual swim-through if you are not trained and briefed.
Where Is O Arco?
Featured Operators
Loading local operators…
Local Intel For O Arco
Community notes to help plan your visit.
Scuba Diving
Volcanic rock terrain with a prominent arch feature and easy to moderate depths.
Freediving
The shallow arch can work for relaxed freediving in calm conditions, but scuba gives better access to the structure.
Snorkeling
Snorkeling can be pleasant in calm water, but the arch and rock details are better appreciated on scuba.
Wildlife at O Arco
Species commonly reported at this site, with direct links into their wildlife guides.
Research Estimate At O Arco
Conservative baseline from public research. No community dives logged yet.
Avg. Visibility25m
Access4/5 · Simple entry
Coral1/5 · Heavily damaged
Aquatic Life4/5 · Great variety
Facilities3/5 · Basic facilities
Crowd / PopularityModerate
