Board a regular wood boat for a traditional caldera travel, forestall for swims, visit the volcano
https://reiddtcp330.cavandoragh.org/top-santorini-island-tours-from-caldera-views-to-winery-tastings-and-hidden-villages-1
Board a ordinary wood boat for a classic caldera tour, prevent for swims, stopover at the volcano, and enjoy onboard tales and snacks.