Board a classic wood boat for a classic caldera excursion, cease for swims, consult with the volcano
https://beaulluh376.rivetgarden.com/posts/santorini-day-tour-itinerary-see-the-island-s-highlights-in-one-day
Board a traditional timber boat for a conventional caldera tour, discontinue for swims, seek advice from the volcano, and appreciate onboard reports and snacks.