quote [ Scientists have recorded the thunderous sound of 1.5 million fish mating in Mexico. One of the loudest noises produced by any underwater animal, the Gulf corvinas’ machine-gun mating call can deafen dolphins and sea lions. When the fish mate, males produce short, sharp sonic pulses like gunshots. When they sing in chorus, the sound is loud enough to hear from fishing boats. Scientists used sophisticated recording technology to catch the sound of the fish orgy on tape. ]