Two ferry companies, Doolin Ferry (https://doolinferry.com/) and Doolin2Arran Ferries (https://www.doolin2aranferries.com/) operate from Doolin Pier. They run between March and November each year and the journey time is about 35 minutes. There is ample parking available at Doolin Pier
Arran Island Ferries (http://www.aranislandferries.com/) operate from Rossaveel ferry terminal. Ferries run all year round and the journey time is about 40 minutes. There is ample parking at Rossaveel ferry terminal, and the ferry company also operate a shuttle bus transfer from Galway City.
Aer Arann Islands (https://aerarannislands.ie/) operate flights from Connemara Airport at Inverin. Flights operate year round and flight time is less than 10 minutes. There is ample parking at the airport.
Dive Academy is located at Ireland Glamping and Camping (Google Maps) and is less than 10 minute walk from the pier where the ferry docks, or drive from the airport by minibus transfer.