El Trencat

A narrow ridge just five to seven metres across, sitting at 20 metres with sand and Posidonia pressing in from both sides. The landward flank drops away in a two-metre escarpment where yellow gorgonians fan out from the rock face — the visual signature of this ridge and absent from the flatter formations nearby. Work southward along the ridge, checking crevices systematically: morays occupy nearly every viable hole, scorpionfish flatten themselves against the rock surface, and lobsters retreat deeper as torchlight reaches them. Isolated rocky blocks on the eastern side provide additional hiding spots. At the sand-rock-Posidonia boundaries, the habitat shifts and so do the residents — barracuda schools patrol above while the substrate-level species change at each transition.

El Trencat converted a Costa Brava loyalist. A diver who had never bothered with the Barcelona coast wrote that the fauna here genuinely surprised him — the terrain is not dramatic, but the species count exceeded anything he expected this close to the city. It is the most frequently dived rocky ridge in the Port Balis sector by a wide margin, and for good reason: the narrow width concentrates three distinct habitat types — bare rock, Posidonia meadow, and sand — into a corridor tight enough that a single slow pass encounters all of them. The gorgonian escarpment adds vertical structure that flat ridges cannot offer, and the habitat transitions at the ridge's edges are where the less predictable encounters happen.

A torch improves this dive significantly — the crevice density justifies carrying one to search the rock thoroughly. Arrive at Posidonia Dive 45 minutes before the scheduled departure. Nitrox is worth using if certified, not because the depth demands it but because extra time at 20 metres lets you work the ridge thoroughly instead of rushing the return. The eastern side with its scattered rock blocks is easy to miss if you only follow the main ridge — ask your guide about the route. One practical note from a trip report: if prone to seasickness, take medication when leaving port rather than beforehand.