Baixa do Filho do Grilhão

The seabed here breaks into a canyon cut through by holes and channels, a short boat hop out from Berlenga Grande on the Berlenga/Estelas side of the archipelago. Two operators working independently describe the same encounter: a large, heavy-bodied fish met face-on, not glimpsed from a distance, "huge sea bass" on one account, "massive rock bass" on the other. Neither names a species, so read the two descriptions as one fish told twice, not two separate finds. Sea bream move over the open ground between the rock, octopus work the holes, and eels and a scatter of crustaceans and other invertebrates fill the smaller crevices. Current running through the canyon is what both writers single out as the catch: it is what turns a fish-rich rock dive into one of the harder calls in the group, and the reason this site pairs experience with certification instead of substituting for it. Plan on your guide's read of the canyon on the day, entering and moving through the holes and channels as conditions allow, rather than a fixed, pre-set track.

Among the area's current-driven trio (Rinchão, Baixa do Broeiro and this one), Grilhão is the only one with no wreck attached: a natural canyon, not a sunken vessel, and both independent write-ups describe it purely in terrain and fish, with no history to tell. For a diver picking through the harder Berlengas/Estelas sites, that makes this the marine-life-density pick over wreck interest. The site rides the same boat as the rest of the Berlenga/Estelas group: the two-dive day trip at EUR85, cash only, tanks of 12L or 15L, equipment rental an extra EUR25, and not the pricier EUR95 Farilhões crossing, which covers a different set of sites. Even the name is unsettled: the operator's own spelling, the one used throughout this guide, is the feminine "Baixa," while an independent travel account and the area's own community shortlist call it "Baixo." Both forms are in current use and nothing here favours one over the other.

Both independent accounts single out current as the reason this site is rated advanced, not easy or moderate: plan it as a drift-capable dive, agree a current plan with your guide before descending, and carry a surface marker buoy. No operator publishes a minimum certification for this specific site. Advanced Open Water is the read here only because the 25-metre maximum depth crosses Open Water's 18-metre ceiling; it is a depth-ladder inference, never an operator requirement. The site sits inside the Reserva Natural das Berlengas.1 The BerlengasPass (EUR3 per person, half-price for ages 6-17 and 65+) is a land-access permit for setting foot on Berlenga Grande itself, and whether it extends to a boat dive that never lands has not been settled either way. Visibility runs an average of 15 metres, in line with the rest of the named sites in the cluster.