entice fish to come back to dead coral reeves. guess what. they did. they returned. i spoke with steve simpson, a marine biologist, about the significant of this research. >> we discovered probably nearly 20 years ago there coral reef fish, baby fish, three or four weeks old. they can hear the their way home and make the sounds the other animals make on the reef and gives them a powerful way to spend the rest of their lives and listen in to different habitats. unfortunately, the reef we were working on two cyclones back year after year and bleaching of the waters that cooked the corals. as a result, the animals and reef died and when we went back there it was ghostly quiet and a sad season we could see how