<Li> Herzing (2013) used an underwater keyboard in the open ocean which dolphins and humans could press to choose a plaything . </Li> <Li> Herzing (2014) created 3 whistles for "play objects (Sargassum...scarf, and rope)", and found that wild dolphins understand them, but has not found if dolphins produce the whistles . </Li> <P> From Roman times to modern Brazil, dolphins have been known to drive fish toward fishermen waiting on shore, and signal to the fishermen when to throw their nets, even when water is too murky for the fishermen to see the arrival of the fish . The dolphins catch unnetted fish disoriented by the net . </P> <P> From about 1840 - 1920 orcas smacked the water off Twofold Bay in New South Wales to signal to human whalers that the orcas were herding large baleen whales nearby, so the humans would send boats to harpoon the whales, killing them faster and more assuredly than the orcas could . The orcas ate the tongues and lips, leaving the blubber and bones for the humans . </P>

Who is the owner of communication between human being and non human being