The following sounds are a compilation of underwater recordings made in a variety of
North American freshwater ponds. They were digitally recorded with a portable DAT
recorder using a pair of omnidirectional hydrophones at a 12 inch separation. Some
of the sounds are at actual speed while others are slowed to an octave below their
true frequency and time domains. Besides their sequencing, no other alterations of the
sounds have been made. Since most of the insects generating these sounds have not
been studied for their sound making capacities, the specific sources remain a mystery.