Fig. 5. A model elasmobranch with three approach strategies to a prey dipole parallel to north. Initially, at point A (40 cm east and 40 cm south of ) the model reacts to the dipole field. Point B (40 cm east and 10 cm south of ) is on the path of the elasmobranch if it were to maintain its original course; point C (30 cm east and 10 cm south of ) is on a path maintaining orientation towards the dipole field; point D (20 cm east and 20 cm south of ) is on the path after an abrupt turn to approach the prey directly.