Your tour will begin when you meet your captain on board your boat for the day, decked out with three double cabins, a bathroom with a shower, an outside shower, a kitchen, and a refrigerator. You’ll then set sail to Ulysses’ Caves, where you’ll have the chance to have your first swim of the day and snorkel among these beautiful caverns formed in a lava cliff overlooking the sea. You’ll be amazed by the gorgeous underwater scenery of vibrant blues and greens. Next, while sailing towards Acitrezza, you’ll pass under the medieval castle of Acicastello and enjoy a spectacular view of the castle by the sea. You’ll notice the characteristic pillow lavas found under the castle due to the rapid cooling of submarine eruptions.   Once you reach Acitrezza, you’ll be shown a marine reserve dubbed "The Cyclopean Isles". After a short stopover with the chance for another swim, you’ll then begin your journey back to Catania, arriving back at either 1:30 or 6:30 PM, depending on your choice of departure time.