
www.iflscience.com/plants-and-animals/captive-orcas-learn-communicate-their-dolphin-mates
*whistles*
( , Tue 14 Oct 2014, 22:24, Reply)

it was mainly through my interest in cetaceans and I remember a paper that described how dolphins change the frequency of their vocalisations when interacting with humans so they more frequently use sounds that are audible to human ears. There's definitely something going on upstairs with these fellas
( , Wed 15 Oct 2014, 0:53, Reply)