T-Reef

Two volcanic cones rise from a sandy, rocky floor at around 30 metres to within about 12 metres of the surface, some 15 metres apart. Divers descend onto or between the pinnacles and work each formation from the shallower top down toward the sandy base, a free-form multi-level dive without a set circuit. Grey triggerfish concentrate around the rock faces in dense schools, thick enough that one diver who visited in 2018 remembered them as unmistakably territorial. Moray eels are reported hiding in the same cracks and holes, and stingrays turn up on the sand between the two pinnacles. Barracuda and hogfish are also reported on the rock, though less consistently than the triggerfish.

Inside the Garajau cluster, T-Reef's draw is the formation itself: the reserve's dedicated twin-pinnacle dive, a single top-to-base profile in one structure, where neighbouring sites in the same cluster run reef and grotto layouts instead. Locally it goes by "Mamas," a name that surfaces independently in an operator's own site listing, two divers' accounts four years apart, and a dive catalogue entry, all describing the same twin-crest shape without being prompted to. Manta Diving Madeira runs it as one of its named boat dives from Caniço de Baixo, and at least one Funchal-based operator has also brought divers here, so it is not tied to a single base.

T-Reef sits inside the Garajau Partial Nature Reserve: an unescorted group of divers is capped at eight and must fly a marker buoy or flag, and spearfishing gear is banned throughout (a diving knife is fine). Current reports disagree, from light to strong enough to carry a diver off the site: treat it as unpredictable and get the day's read from your operator's briefing before you get in. AOW is recommended for the full 12-30 metre profile; an Open Water diver can work the shallower pinnacle top, around 12-18 metres, but should not plan on reaching the sandy base. The resident triggerfish defend their ground around the rock faces, so give them space and let them settle.