And then, to test whether this really was enough for a fish to choose where it wanted to make its home, we hung the speakers over small piles of dead coral rubble, artificial reefs that we built on the sand flats.
그 후 실험의 결과가  타당했음을 입증하고자 죽은 산호 더미에 스피커를 달아 인공 암초를 만들었습니다.