Productive areas include the channel leading into the harbor, where deeper water attracts predators. The edges of the main bay, particularly where there are changes in bottom composition from sand to mud or eelgrass beds, hold flounder and other species. The area around the Cocagne River mouth is a natural funnel for bait and gamefish. The wharf and breakwater structures provide ambush points for fish and accessible fishing for anglers. Further out in the Northumberland Strait, submerged shoals and deeper channels are known to hold larger schools of mackerel.