Swim – Dive – Hike:
Seatrekking is a sport that consists in exploring the shorelines of oceans, seas, bays, lakes or rivers both above and below the water over the course of several days, without the aid of a boat or a watercraft. Seatrekking involves swimming, snorkeling, freediving and hiking, and combines all these disciplines into a distinctive form of sport and outdoor experience.seatrekking.org
Sporades islands provide the possibilities for a number of trails of various lengths and difficulties. Considering this is a protected area, it is best to contact directly the local guides who live in this region and will be able to recommend you a safe and environmentally respectful itinerary based on your experience and what you like.