The island is situated between the northeast of Achill Island and the mainland, and is accessed by boat from either Doran's point at Ballycroy or Bullsmouth, Dooniver on Achill Island.The island is 2½ km x 1½ km, or 650 acres (2.6 km2) in area.
The main activities are sheep and cattlefarming, fishing and winkle picking. Facilities on the island included a school and a post office, both now closed. Plans to build a cable-car link across the very dangerous Bullsmouth Channel, one of the strongest currents in Europe separating the island from Achill had been under discussion since 1996, but have now been abandoned due to the high cost and the money was given towards the Achill bridge redevelopment. Unpredictable currents in the channel during winter months can render the island inaccessible, even though the passage during fair weather is about ten minutes in the traditional boat, the currach. Emergency access is by helicopter.
The population is now down to a few dozen, almost all elderly. All speak Irish Gaelic as their first and community language.