As well as extraordinary biological vitality, you will see Sardinia’s ancient history written on its seabed by the tides that once washed, discovered and again submerged the coastline during the geological eras. The rocks and the monoliths, canyons and little caves, once shaped by the rain and wind, are now submerged and covered by an extravagant marine texture, where octopuses and cuttlefish play hide and seek with divers. The same fate befell the beach rocks, the paving of the fossil beaches, which can be found at shallow depths and are fantastic to swim over wearing your mask. They too have been in and out of the sea, trapping the signs of marine and terrestrial life in their comings and goings. Now they look like ancient Roman roads where Mediterranean fish chase each other.