Sligo Bay is opened between Aughris Head (South side) and Roskeeragh Point (North).

[2] The inner part of the bay is divided into three smaller bodies of water, hosting the estuaries of three rivers: Drumcliff, Garavogue and Bonet.

On the southern branch of Sligo Bay also has its mouth the Ballisodare River, near the village of the same name.

This kind of food attracted settlers since the Stone Age, as demonstrated by a number of middens discovered in the area by archeologists.

The 25m high Blackrock lighthouse 54°18′28″N 8°37′4″W / 54.30778°N 8.61778°W / 54.30778; -8.61778 in Sligo Bay is notable for having external steps until halfway up the tower.