Possible Clues:

• 'The waters of Ireland, to be found in the canals, by the sound of them (6)'
• Ghouls swirling about lakes in Eire
• Lakes
• The waters of Ireland
• Ghouls of the water in Ireland
• Irish waters need quays,, by the sound of them
• If there were ghouls in Ireland, that's where they'd be hidden
• Irish lakes or arms of the sea
• Despite the water, not 14 downs, by the sound of them
• They go and get lush with water