Badalona

A short, shallow dive that is almost entirely about looking carefully at small things. From the beach south of the pier, descend through bottle-green water onto fine sand at about 5 metres, then follow the row of pillars seaward. There is no wall, no relief, no pelagic swim-through; the structure is the only landmark on otherwise featureless ground. Visibility commonly sits at 3-4 metres on the bottom and up to 6 metres on the surface, with rare calm days reaching ten. The pier runs 275 metres east into the sea, finishing in a circular platform with a viewing hole in its centre that lets daylight pierce through to the sand below.

The interest is on the pillars and what hides on the sand between them. Encrusting fauna and nudibranchs cover the concrete; long-snouted seahorses cling to pillar bases and net edges where divers know to look; the occasional sand conger lies half-buried, and on a good day an electric ray flushes from a kick-stir. By night the site changes character: torches pick out emerging shrimp and crabs, and Rhizostoma jellyfish drift through under the structure in numbers, harmless to divers and a wide-angle photographer's reward in shallow water.

Three things keep local divers coming back. First, the geographic positioning: this is the closest dive to Barcelona by public transport, with metro and commuter-rail access from the city centre that almost no other Spanish dive site offers. Second, the seahorse colony on the pillars, anchored by a local marine-conservation NGO's Save the Sea Horses programme that uses the site as a monitoring point. Third, a night-dive culture that local club SASBA has built across five decades of full-moon scheduling, with an annual underwater-photography night competition on the pier.

What this is not is a destination dive. The right mental model is macro on pillars with jellyfish overhead, in a working harbour-suburb setting where the post-dive scene is the city promenade itself, not a separate dive-town.

The pier was built in the 1960s by CAMPSA, the Spanish state petroleum company, for unloading oil tankers, and ran in that role until petroleum-handling moved elsewhere in the 1990s. Local divers continued to use it informally as a shore entry through the abandonment period. Badalona City Council purchased the structure from CAMPSA's successors in 2003, and the pier reopened in 2009 as a 275-metre public promenade with a circular viewing platform. SASBA, founded 1973, has used the Badalona coast as its home water across all of these phases. The history is industrial-modern; there is no Roman-road or classical-harbour legend here, and any such framing belongs to the Mataró stretch further north.

Macro setups outperform wide-angle for most of the year, working the encrusting fauna, nudibranchs, and the seahorses on the columns. Older community accounts describe the seahorses as elusive rather than easy, so a patient pass and a guide who knows the current spots are both useful. In Rhizostoma season, typically spring through summer, the trade-off flips: a dome-port wide-angle setup pays off in shallow water, and one community account from the early 2010s described forty jellyfish drifting along the pier in a single session. Night dives sit between the two, with torch beams isolating subjects against dark sand. The annual fotosub night competition draws a stable cohort of repeat photographers, and ambient promenade lighting at full moon gives the site a chiaroscuro look that is hard to find elsewhere on the Catalan coast.

Check the Badalona municipal beach-status page before driving out; heavy rainfall the day before tends to spike turbidity, and swim-ban days correlate with the worst diving days. The row of columns is the navigational reference, so carry a backup torch on night dives. Trim and buoyancy matter on this fine-sand bottom; hover, don't settle, because one careless fin-kick reduces team visibility to under a metre. Shore-anglers fish from the pier and small craft cross the bay, so pick entry points away from active fishing lines and carry an SMB on ascent. SASBA runs on a club-membership model, Freedome lists try-dives at 120 EUR for the May-to-October season, and Anèl·lides operates educational dives by appointment rather than as a recreational centre.