The underwater topography of the Golfe de Porto is every bit as jaw-dropping as what’s visible above, with its wild and rugged cliffs and crags continuing in mirror-image below the surface. Thanks to the Réserve Naturelle de Scandola, it’s also rich in colourful marine life.

Between April and October, Porto boat operators offer half-day excursions to Scandola; expect to pay around €45 for a three-hour trip that includes a stopover in the idyllic village of Girolata, or €60 for a four-hour cruise that also takes in Les Calanques de Piana, astonishing deep-cut inlets on the south side of the gulf.

Diving outfits at the marina offer introductory dives, beginners’ courses and snorkelling cruises.

Hiking

The Porto area holds some wonderful hiking trails; the tourist office sells a €3 brochure detailing three dozen signed walks of varying difficulty. The hill villages of Ota and Evisa, inland, stand at either end of a superb footpath that leads along the steep sides of the Gorges de la Spelunca, one of Corsica’s deepest natural canyons.