TY - GEN AU - Pilleri, Georg, TI - The Sonar system of the dolphins KW - DELFINES KW - COMUNICACION ANIMAL KW - SONAR KW - ECOLOCACION KW - MAMIFEROS MARINOS N2 - The theory that the echolocation clicks of dolphins and whales are produced in the region of nasal air sack of the cranial organ known as the melon is physiologically untenable. Both experimental and anatomical findings prove conclusively that the larynx is the only source of sound ER -