Carrapateira

The Algarve's coastline turns from its sheltered south face to the open Atlantic at Sagres, and Carrapateira dives on the far side of that corner: a protected cove with a cliff on one side and an underwater canyon opening beyond it. Divers work through little caves and overhangs cut into volcanic rock, then into a wider run of large boulders to swim between. A shallower shelf, one to fourteen metres, sits over ground reached by kayak or from the coastline; the fuller route drops through the canyon to around sixteen metres, reached instead on a weather-permitting boat trip. Reef fish move through the gaps at both depths, and conger eels and rays use the caves and overhangs as cover.

Carrapateira dives the open, west-facing Atlantic coast, unlike most of the Algarve's south-facing sites, inside the Southwest Alentejo and Vicentine Coast Natural Park, north of the sheltered cape at Sagres. That exposure also makes this a weather call, not a standing booking: conditions on the open headland decide whether a trip goes out on a given day. The shallow and deep sections above read less like a contradiction than one dive with two different ways in: a gentle entry suited to beginners, and a fuller canyon route pitched at more experienced divers.

The park's exact zoning and any diving-specific permit for this point has not been established, so check the current rules before you dive. Caves, overhangs and swim-throughs run through the canyon, none of them a fully enclosed system; open-water training covers them, and a guide is the right lead through the tighter spots. Pack for cooler water than the Algarve's south coast: this west-facing stretch runs closer to 15°C in winter, and a 7mm wetsuit is the area-wide standard year-round.