On Dolphin's social cognition

"Intercepted echolocation data could generate objects that are experienced in more nearly the same way by different individuals than ever occurs in communal human experiences when we are passive observers of the same external environment. Since the data are in the auditory domain the 'objects' that they generate would be as real as human seen-objects rather than heard-'objects', that are so difficult for us to imagine. They could be vivid natural objects in a dolphin's world" (Jerison).