To get around on Poros and beyond, you have several options:
Municipal Buses: There is a free municipal bus that operates around Poros town and a private bus to Monastiri, running twelve times a day from 08:00 to 20:00.
Ferries: Ferries depart from Poros to a number of destinations such as Spetses and Hydra, take advantage of this opportunity to visit two or three islands for one!
Walking: Poros town is small and easy to navigate on foot, so you won't need a car
Taxis and Water Taxis: Taxis and water taxis are available for more direct routes to remote beaches and other parts of the island