You can take a ferry from Doolin harbor to the Aran Islands.  The Aran Islands consist of three individual islands: Inisheer, Inishmaan and Inishmore.  Collectively they are one of the most recognisable aspects of Irish life and culture, but they all have individual characteristics and attractions that set each of them apart from the others Inisheer is home to a variety of nesting birds, Inishmaan has a diverse ecological make-up that courts the attention of botanists and wildlife lovers, and Inishmore is renowned for its examples of ancient stone forts and churches. We can drop you down to the ferry and you can choose how long you wish to stay.  The options usually allow approx. 3 hours on the smaller island  Inisheer and a full day on the largest one Inishmor. (www.aranislands.ie)