starpiste

I have spent too much time stuggling to find information and I'm starting to get frustrated so I'm hoping someone here can give me some guidance.

A friend and I are going to be spending two weeks in Greece in June. We want to go to one of the islands but aren't sure which one. We'd like to compare time and costs, but I can figure out how to find either of them. (Crete is one we're really considering but are concerned about the time it'll take and the cost)

I've found lots of information for international ferries but not ones within greece. The one site I did find (Greek Ferries) was not at all helpful because when ever I searched for a trip it said nothing was available. I don't know if it has to do with my dates, port selection or what.

Any guidance would be so appreciated.