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About Achill Island
Achill Island, the largest island in Ireland, sits off the Mayo coast connected by a bridge, with an Atlantic-facing west coast that offers sea caves, cathedral rock formations and surge channels at 5–35m depth. The outer headlands are advanced diving — strong currents and Atlantic swell demand experience and careful timing — but the rewards include blue and porbeagle sharks from June onwards, jewel anemone-encrusted walls, and frequent basking shark encounters. The sheltered east-coast bays provide calmer conditions for less experienced divers.
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