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Heaviside's dolphins (Cephalorhynchus heavisidii) relax acoustic crypsis to increase communication range
Proceedings of the Royal Society of London. Biological Sciences
The costs of predation may exert significant pressure on the mode of communication used by an animal, and many species balance the benefits of communication (e.g. mate attraction) against the potential risk of predation. Four groups of toothed whales have independently evolved narrowband high-frequency (NBHF) echolocation signals. These signals help NBHF species avoid predation through acoustic crypsis by echolocating and communicating at frequencies inaudible to predators such as mammal-eatingdoi:10.1098/rspb.2018.1178 pmid:30051842 fatcat:hkeqe2litrfyfgo436wjukqpgi