... exposure of sperm whales to continuous and pulsed sonar reveals that total pulse energy predicts cessation of foraging better than pulse amplitude or duty cycle. Anthropogenic noise Continuous active sonar DTAG Intermittent sound Time budget Time-series model Noise pollution caused...

..., but not to perceive constant echo levels. Biosonar Click packet Dtag Interclick interval Source level Toothed whale Toothed whales and bats are unique in being the only animals in which echolocation has evolved into the primary means by which they forage and navigate. Although the media in which...

... and accelerometer data from digital acoustic recording tags (DTAGs). Over the course of three austral summers (2014, 2015 and 2016), seventeen tags were deployed, yielding 124 h of data. We report the occurrence of Southeast Pacific type 2 (SEP2) calls, which exhibit peak frequencies, durations and timing...

... contributions of flow and ambient noise. The uncorrelated part of the noise measured in digital acoustic recording tag (DTAG) recordings related well to swim speed of a humpback whale ( Megaptera novaeangliae ), thus providing a robust measure of flow noise over a wide frequency bandwidth. By removing...

... taxa. Here, we report the first detailed quantification of echolocation behaviour during prey capture in the most studied delphinid species, a false killer whale and a bottlenose dolphin. Using acoustic DTAGs, we demonstrate that just prior to prey interception these delphinids change their acoustic...

.... and A.F. processed and analyzed data; J.v.d.H., A.F., K.A.S., V.P., T.H., J.R.-L. and M.J.M. wrote the manuscript. Competing interests The authors declare no competing financial interests. 18 5 2014 13 10 2014 © 2014. Published by The Company of Biologists Ltd 2014 DTAG...