Killala Bay is a premier saltwater fishing destination on Ireland's west coast, forming a broad estuary for the River Moy where it meets the Atlantic Ocean. The bay's defining characteristic is the remarkably close proximity of the deep waters of the continental shelf to the shoreline, creating a fertile marine environment that supports an exceptional variety of species, from common inshore fish to unusual deep-water specimens. This unique geography, with a maximum depth of 36 metres (20 fathoms) and a width of about 5.5 miles, provides sheltered conditions for boat angling while also offering extensive rock marks and beach fishing opportunities along its shores. The bay is a designated Ramsar site (Killala Bay/Moy Estuary), recognized for its ecological importance, and serves as a hub for both serious competition anglers and recreational fishermen seeking a diverse and productive experience.