Fig. 7. Comparative sizes of predator, prey and echolocation signal for the big brown bat Eptesicus fuscus (left), Blainville's beaked whale Mesoplodon densirostris (center) and bottlenose dolphin Tursiops truncatus (right). The lengths of the signals are computed by multiplying the typical signal duration by the sound speed in the appropriate medium. If different length signals are produced during search and terminal approach, representative lengths of each are indicated.