You can take a charter boat on a Thursday to Paxos and Antipaxos, which are nearby islands, from the Parga Pier. The charter boat departs at 10:00AM and returns to Parga at 6:00pm. The cost of the trip is 25 Euros. You will get to go on a tour of the island and stop for some coffee or a meal at one of the villages. Then, you will be taken to a beach on Antipaxos in the afternoon to swim.