Their sonar clicks have a peak frequency of 115 kHz , while their social whistles are at around 35 kHz .
Their sonar clicks can be audible to others of their species at distances of up to 10 km ( 6.2 mi ) .
Their sonar clicks have a peak frequency of 115 kHz , while their social whistles are at around 35 kHz , and can be audible to others of their species at distances of up to 10 km ( 6.2 mi ) .