Olo is a popular rock dive site which can be found out of Port of Leixoes, Portugal. With a maximum depth of 21 meters and a minimum depth of 9 meters, this dive spot is perfect even for novices. Divers can expect to find a variety of marine life, such as rock fish, sponges, molluscs, anemones, crustaceans, and others. One most likely will experience low current and medium visibility.

Furthermore, near the rock dive spot also lies the wreck of Marsub, a wooden fishing vessel that's now visited by divers interested in wreck diving. The two dive spots are close, so you can easily check them out in the same day.