Coqui Ilanero frog
In 2015, researchers declared the Coqui Ilanero frog endangered. This tiny Puerto Rican frog species has a unique squeaky call. Researchers are currently capturing this frog’s unique squeaky call through iPods deployed across the Puerto Rican wetlands to identify the health of the frog population. Furthermore, this remote sound monitoring system can track any animal species with a detectable call.