New Algorithm Recognizes Distinct Dolphin Clicks in Underwater Recordings (image) PLOS Share Print E-Mail Caption Three-dimensional rendering of Risso's dolphin echolocation click spectra recorded in the Gulf of Mexico, aggregated by an unsupervised learning algorithm. Credit Kaitlin Frasier Usage Restrictions CC-BY. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.