In central Indonesia’s Spermonde archipelago, a coral reef destroyed by blast fishing — where sticks of dynamite are thrown into the reef to kill fish — has been recovering, but scientists weren’t sure if its ecosystem would return as well. That is, until they heard the endearingly unusual sounds of marine life.

Coral recruitment was assessed in highly diverse and economically important Spermonde Archipelago, a reef system subjected to land-based sources of siltation/pollution and destructive fishing, over a period of 2 years. 

Species-area curves calculated from line-intercept transect surveys on 15 reefs in three regions of Indonesia allow estimation of the relative decrease in within-habitat coral species diversity associated with different types of reef degradation.