Nereo Cave & Arches of Nereo

Nereo Cave & Arches of Nereo is the crown jewel of Alghero's cave diving, one of the largest underwater caves in the entire Mediterranean Sea. The massive cave system descends to 30 meters, with enormous chambers connected by dramatic arches wide enough for multiple divers to pass through simultaneously. Ancient stalactites, some reaching several meters in length, hang from the ceiling in breathtaking formations. Red coral, lobsters, and dense marine growth populate the cave. The Arches of Nereo are simply unmissable — a world-class dive site that rivals any cave diving destination globally.