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Scuba diving at Cabo San Antonio Marine Reserve in Costa Blanca
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Cabo San Antonio Marine Reserve

GREAT
Costa BlancaBoat
About This Site
Cabo de San Antonio is a protected marine reserve straddling the cape between Javea (Xabia) and Denia, where 150-metre cliffs plunge into the Mediterranean and continue underwater as a wall, scattered pinnacles and sandy plains. More than six established dive sites range from about 7 to 22 metres, taking in a dramatic cape wall, small submerged 'mountains' at 18-25 m, mushroom-shaped rocks, swim-throughs and the famous sea cave Cova Tallada on the northern slope. It is one of the most biodiverse stretches of the Costa Blanca and lies within the Javea-Denia cetacean corridor, so dives are scenic and rich while the protected status keeps fish life abundant. Access is by boat from authorised reserve operators only, and conditions suit everyone from beginners on the shallower reefs to advanced divers on the deeper pinnacles.

Difficulty

Intermediate

Max Depth

21m

Type

Boat

Typical Visibility

15m

Conditions Summary

Best time today

9AM - 3PM

GREAT

Best day in forecast

Friday

GREAT

2026-07-10

Community-reported visibility

n/a

Warnings for today

None

The dive sites sit off the eastward-projecting tip of Cabo de San Antonio, fully open to the Mediterranean through the E and SE sectors, where this microtidal coast is driven by wind-waves rather than ocean swell. The warm Scirocco from the S-SE has the longest fetch and builds the largest seas, so a south-easterly blow is the main reason to cancel; the high cape and Iberian landmass to the west completely block the NW Mistral/Tramontane and all landward winds. The bays of Javea (south) and Denia (north) wrap around the cape and partly shadow those flanks, so the inner reserve sites stay diveable in most conditions.

NNEESESSWWNW
Protected
Partially Exposed
Exposed
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Nearby Dive Sites
Isla del DescubridorCova dels Arcs (Cala Moraig)Los Arcos (Peñón de Ifach)Morro de ToixLa Llosa de Benidorm (Isla de Benidorm)La Llosa de Tabarca (Merolandia)