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Published on: August 16, 2024
Unknown beaked whale echolocation signals recorded off eastern New Zealand
Giacomo Giorli1, Kimberly T Goetz1, Julien Delarue2
1National Institute of Water and Atmospheric Research, 301 Evans Bay Parade, Hataitai, Wellington 6021, New Zealand Giacomo.Giorli@niwa.co.nz, Kim.Goetz@niwa.co.nz.
Abstract:
The echolocation signals of most beaked whale species are still unknown. In fact, out of the 22 species comprising the family Ziphiidae, only the echolocation pulses for 7 species have been clearly described. This study describes two distinct beaked whale echolocation signals recorded in the Cook Strait region using passive acoustic technology. These signals differ from previously described Ziphiid species clicks. A description of the time-frequency characteristics of the two signals is provided. Understanding the characteristics of these signals is necessary to correctly identify species from their echolocation signals and enables future monitoring of beaked whales using passive acoustics techniques.
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