The distinctive forehead cleft of the risso’s dolphin (grampus griseus) hardly affects biosonar beam formation

HIGHLIGHTS

SUMMARY

While most odontocetes produce clicks that are unimodal on-axis (i.e., clicks have a single peak in the frequency spectrum), Risso`s dolphins also produce bimodal clicks (exhibiting two distinct peaks in the frequency spectrum). characteristics of their clicks. While most odontocetes produce clicks that are unimodal on-axis (i.e., clicks have a single peak in the frequency spectrum), Risso`s dolphins also produce bimodal clicks (exhibiting two distinct peaks in the frequency spectrum). Given thisonly unique feature,isprevious authors speculated the cleft sound might be responsiblemodel for thebe different features(origiseen . . .

 



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