Board a ordinary wooden boat for a vintage caldera journey, cease for swims, talk over with the volcano
https://gunnerwkks834.readspirex.com/posts/santorini-day-tour-itinerary-see-the-best-in-one-perfect-day-2
Board a normal wood boat for a conventional caldera tour, give up for swims, talk over with the volcano, and experience onboard reviews and snacks.