I couldn't find any peer-reviewed publications by the researchers cited in the press releases by speakdolphin.com and cymascape.com - Jack Kassewitz and Jim McD

I couldn't find any peer-reviewed publications by the researchers cited in the press releases by speakdolphin.com and cymascape.com - Jack Kassewitz and Jim McDonough et al. However, I did find several scholarly articles that support the the hypothesis that dolphins seem able to recognize objects based on mental images they have formed via their echolocation sense, as opposed to recognition based on the object's particular texture, material, size, etc "signature". Here is one of them: "Seeing through sound: dolphins (Tursiops truncatus) perceive the spatial structure of objects through echolocation." Herman LM1, Pack AA, Hoffmann-Kuhnt M.J. Comp Psychol. 1998 Sep; 112(3):292-305. http://www.ncbi.nlm.nih.gov/pubmed/9770316 http://www.ncbi.nlm.nih.gov/pubmed/9770316 PDF:[1]. From the paper's General Discussion section: "The results also argue strongly that learning to associate particular characteristics of echoes returning from objects with the visual appearance of those objects was not the mechanism through which the dolphin in this study or the Pack and Herman study accomplished the cross-modal matching task (cf. Harley et al., 1996). Rather, the most compelling general explanation for the demonstrated cross-modal ability is that echolocation yields a direct percept of the object, in effect a representation of the object's shape that is analogous to or easily integrated with the percept developed through vision." "In summary, the results reported here as well as those of Pack and Herman (1995) begin to construct a compelling case for a concept of echo imaging by the dolphin. The dolphin can apparently use returning echoes to construct a representation of an object that preserves the spatial structure of that object, to the extent that representation can be used to directly recognize that same object through the visual sense alone. The very short decision times used by the dolphin suggest that the object percept develops almost immediately and is of an integral whole, rather than limited to the examination and extraction of selected features." [1]: https://www.researchgate.net/profile/Matthias_Hoffmann-Kuhnt/publication/13516477_Seeing_through_sound_Dolphins_%28Tursiops_truncatus%29_perceive_the_spatial_structure_of_objects_through_echolocation/links/00b49529ef1099134f000000.pdf https://www.researchgate.net/profile/Matthias_Hoffmann-Kuhnt...