Grotta di Falco is a shallow cave dive in the Punta Giglio side of Alghero, best known for its horseshoe-shaped passage and air pocket. The route starts with a brief submerged approach, opens into an interior chamber, and then continues through an emerged section before returning to blue water. It is a better fit for calm seas and controlled buoyancy than for rough days, and the overhangs can hold red coral, anemones, conger and other cave life.