Set sail around a couple of lesser-known Greek islands on this boat cruise. First stop, the uninhabited island of St Antonios –you won't be able to wait to jump into the crystal-clear waters here. For lunch, there's a barbecue on board to fuel up for the afternoon's activities. You can have a relaxing dip, or if you'd rather stay on dry land, you can visit the island's church. Then, the adventure continues with a swim stop at Gyali, a Greek volcanic island where pumice stone is mined. Just so you know, transfers to and from the harbour aren't included in this experience.