What a great day! If you have one day to spend in Santorini, this is how I would spend it. The crew, the food and drink, the views, the snorkeling and the fellow passengers could not have been any better. The semi private tour is the right size - intimate enough that you do not feel overwhelmed and large enough that you can socialize with the other passengers. This was a very relaxing way to spend the day and experience the spectacular views and warm waters surrounding Santorini. The crew catered to your every need, prepared a phenomenal lunch spread, and was always there to hand you a beer, glass of wine, snorkel gear or whatever you need. Our boat was named Horizon and Kudos to George, Panos, Tzoll and Svetlana!