Plataforma Mariana

Most centres run La Plataforma as a spiral. Drop the mooring line straight to 32 metres and the hexagonal frame appears tilted on its former base columns — some standing, some fallen, twisted iron radiating through a chaos of debris on the sand. Conger eels and Mediterranean morays settle into the deeper metalwork; scorpionfish camouflage on the structure; spiny lobsters work the cracks. Then begin the upward circumnavigation.

The mid-depth zone is what gives the dive its "sunken city" character. The frame is hexagonal, not linear, with internal volumes you swim through rather than alongside. Columns and pillars define the route. Climb a few metres further and the upper rim around 12 metres comes into view, lit by ambient light and ringed by the school the dive is named for. Mediterranean barracuda envelop the structure in numbers local centres count in thousands, calm enough that a guide can position the group inside or below the cylinder of fish for close-quarters images. Amberjack patrol the perimeter further out. Mooring is on the shallowest part of the wreck for the safety stop.

This is one of two Ibiza wrecks that Spanish-language forums have been calling "pecios de envergadura" — wrecks of significance — for two decades. Don Pedro is the marquee 142m ferry. La Plataforma is the shallower, photogenic counterpart: a former floating fish farm whose hexagonal geometry generates dense biology while staying open and explorable across the whole 12-32m range. The 12m minimum makes it accessible to a wider range of certifications without sacrificing the wreck experience, and the species list documented in 2004 forum reports matches what divers see on contemporary trips — unusual continuity for a Mediterranean artificial reef and a sign the assemblage stabilised early.

The framing is biological as much as architectural. Centre descriptions and diver reports converge on the same noun: barracuda. Photographers come back for the schooling tower; videographers cite the structure-and-fish combination as one of the better wide-angle setups Ibiza offers.

The boat departs from Marina de Formentera if you book with Vellmari (under 20 minutes to the site) or from Marina Botafoch on the Ibiza side with Scuba Ibiza or Anfibios (around 30 minutes). Year-round availability is Ibiza-side only — Formentera operators run May to October.

Plan a 5mm wetsuit with hood and booties for warm-season diving; shoulder-season visits below the thermocline are more comfortable in 7mm or semi-dry. A torch helps in shaded interior spaces of the frame, and a camera is worth the bag space — the structure-with-barracuda combination is what photographers cite the dive for. Decompression diving is not standard practice and requires specific agreement with the centre.