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THE CORRECT ANSWER: Its conical shape and orientation are calibrated to exploit the inability of certain reef species to retreat

The chute is the most technical element of the traditional Haitian trap. Its design is based on careful observation of the ethology of reef fish, such as snappers or groupers. Once the fish enters the funnel, attracted by the bait, it ends up in the holding chamber. The geometry of the opening is calculated so that the fish, whose morphology and fins are optimized for forward propulsion, cannot perform the backward maneuver necessary to exit through the narrow passage. In Haiti, artisans often adjust the inclination and diameter of the chute according to the target species, demonstrating remarkable empirical expertise. This technical precision guarantees the effectiveness of the trap while allowing passive selection of the size of the individuals, thus minimizing sorting efforts when fishermen bring up the traps.