Cala Guillosa

A rock wall carrying coralligenous growth drops through Cala Guillosa's working depth band, over a base that mixes bare rock with patches of sand. The wall rewards a slow, close look over a fast swim past it: scorpionfish sit motionless against ledges built up by the coralligenous growth, nudibranchs work the same crust close in, and conger and moray hold the crevices where rock gives way to sand at the base. Published figures for how deep the wall actually runs differ by source; agree a working maximum with whoever is briefing the dive before you descend. Boats tie off to park-managed mooring buoys, out of Llançà or Port de la Selva.

Cala Guillosa's own distinction is shelter: it sits on a stretch of the Mar d'Amunt that stays calmer than the more exposed points along this shore when the Tramuntana wind picks up, keeping a boat trip possible on days that shut down less protected sites. That shelter pairs with a wall built for patient macro work, not big-animal encounters: scorpionfish sitting still against the rock, nudibranchs on the coralligenous growth, moray and conger holding the crevices between the rock and the sandy patches at its base.

The published coordinates come from a single catalog entry, not a survey, so treat them as approximate. No season specific to this point is documented; the wider park reports its clearest water in April-May and September-October, and this site's own shelter makes it a reasonable fallback on days the Tramuntana closes more exposed points regardless of month. Do not confuse this dive with Cala Guillola, a similarly-named hiking cove by Cadaqués on the opposite, southern side of the park: that is a walking destination with no boat access and no connection to this site beyond the name.