What specific objects do yellowfin tuna aggregate around to concentrate baitfish?

Floating debris, submerged banks, or anchored buoys

Yellowfin tuna exhibit a behavioral tendency to congregate near objects in the open ocean that serve to aggregate smaller prey fish. This behavior is driven by the efficiency it offers in foraging, turning the search for food into a more predictable activity. The structures identified as attracting these baitfish aggregations include man-made items like anchored buoys, natural features like submerged banks, and even miscellaneous floating debris. This congregation pattern is heavily utilized by certain fishing operations, notably purse seining activities that target schools gathered around Fish Aggregating Devices (FADs), demonstrating a direct link between natural behavior and industrial fishing tactics.