Berlengas - Cova do Sono

Entry is at the Lagosteira cave, ten metres down on Berlenga Grande's south side. The first room holds conger eels and grey triggerfish tucked into the rock cracks, lit by whatever reaches in from the entrance and by a large air pocket trapped against the ceiling. A second, roomier chamber lies beyond it, reachable with a torch, before the route narrows into the Furado Grande tunnel at eight metres and threads through to open water. The tunnel exits into Cova do Sono, a calm bay on the rocky, boulder-strewn south side of the island that bottoms out at twelve metres, the low point of the whole route. Sea breams, octopuses and small sea bass work the boulders and the cracks between them, and where the tide allows, a couple of further small caves branch off the bay for anyone who wants to keep exploring before heading up.

The Berlengas' other named dives run to depth and current: Primavera, a wreck, sits at a contested sixteen to twenty-four metres, and the outer islet cluster further out is rated moderate to advanced. Cova do Sono is built the opposite way, a calm, low-current bay, not a drop or a wreck, which is why both local operators call it the simplest dive in the cluster. Its identity carries a genuine split. The independent local operator treats Lagosteira, Furado Grande and Cova do Sono as one connected dive with a single route from entry to exit. JustDive-Blue Academy's own catalogue instead lists Cova do Sono and Gruta Lagosteira as two separate, separately rated products. The name itself splits the same way: this page lists it as Cova do Sono, every operator and catalogue entry calls it Cova do Sonho, and the independent operator's own map settles for neither, listing the spot as "Cova do Sonho ou Sono". Whichever version you book, the same three landmarks are what you swim.

The two hazards either operator names are practical rather than physical: whether the tide allows entry to the extra caves at Cova do Sono, and the boat traffic that transits directly above the bay on the way in. Carry a torch for the Lagosteira cave's second room. The dive sits inside the Reserva Natural das Berlengas; the BerlengasPass is a land-access permit for setting foot on the island itself, and whether it extends to a boat dive that never lands is unclear, so budget for it only if your operator asks. There is no separate fee for the site itself: it is one of 13 named spots on the two-tank Berlengas day trip, EUR85 per person, cash only, with equipment rental an extra EUR25.