Isla de Santa Eulalia

Two dives share the island, branded Sur and Norte by Cala Pada Diving Center. On the Sur side the boat anchors close in and divers descend along the wall, keeping the island on the left shoulder and drifting over Posidonia until the bottom turns to rock. Boulders and cracks are the centre's "look here" zone for resident dusky groupers and moray eels. The return leg passes through the Aquarium: platforms, craters and crevices where the centre frames fish density as picking up noticeably, often with an octopus or two on the rocks. Max 26 m, around 50 minutes. The Norte dive is 10 minutes' boat ride: start north-east, follow the reef wall down past boulders and small fish schools, reach the sandy seabed at 26 m where a resident barracuda school routinely hangs, and turn around at a canyon opening. Two open swim-throughs sit on this side, one at 27 m and one at 15 m, both with daylight at the exit and no overhead environment certification needed. Ascend along the reef top, octopus on the boulders, safety stop at 5 m back at the boat.

It is the close-in, repeatable house island of the Cala Pada base: easy enough to be a beginner's first reef dive, varied enough that operators document three to four routes around it. Two dependable signatures explain why divers come back. The first is the resident barracuda school over the sandy seabed on the Norte side, which appears in centre descriptions across multiple operators and in dated diver reviews from the 2025 season. The second is the south-side Aquarium, the centre-named finale of the Sur dive where the framing has stuck because the platforms-and-crevices terrain genuinely concentrates fish life. Posidonia meadows ringing the island filter the water to 20 to 30 m visibility, so neither feature is hidden. None of it requires Advanced Open Water, including the two open swim-throughs.

Pleasure boats share these waters in summer; deploy your SMB before every ascent and do it early enough to be visible. Sur is the quicker run from Cala Pada at 5 minutes, Norte is 10. Both top out at 26 to 27 m, well inside the Open Water range, but the Norte swim-through at 27 m sits right at the limit, so confirm the route plan with your centre if you are newly certified. The base reopens in May, with surface water around 18 °C at the start of the season and climbing toward 24 to 28 °C in July and August. A 5 mm wetsuit is the safe year-round default; 3 mm is tolerable for the shallower Sur dive at peak summer. The 27 m swim-through is dim enough that a torch is sensible. Operator pages flag the site as a "marine reserve," but the island is not within either of Ibiza's two formally designated reserves, and no site-specific permit, quota or fee applies.