Abstract Echosounder surveys of fish and zooplankton are typically conducted using fixed values of the echosounder transmit-pulse (“ping”) interval and data-logging range. The transmit-pulse interval must be long enough to sample to the range of the farthest (deepest) species under study, potentially causing undersampling of closer (shallower) species. We present an algorithm to dynamically minimize both the logging range and transmit-pulse interval while ensuring that the logging range equals or exceeds the range…