Some people, often without knowing it, suffer from the oscillating movements of the boat, this causes nausea and discomfort, ruining a magnificent experience. If you think you may have this condition ask your doctor if you can take tablets for seasickness.
I've been diving for 15 years... with dry suits in the San Juan Islands of Washington State to Tee shirts in Bonaire and Roatan, The GBR, The Coral Sea and Poor Knights Island, NZ. My dive with DIve Master Vittoria on the Banco Santa Croce site was a Top Three Dive for me. With Tuna feeding on schools of sardines back dropped to beautiful Mediterranean coral... this dive had it all. The Professional, experienced and fun shore crew at Punta Campanella Diving Center made this a perfect day.