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May 14, 2026The Journal of the Acoustical Society of America

Hearing in the Australian sea lion ( Neophoca cinerea ): First audiogram predictions from CT-based finite element analysis

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Authors

CWChong WeiHRHolly RaudinoKWKelly Waples

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Overview

Randomized trial predicts hearing capabilities in Australian sea lions, highlighting risks from ocean noise exposure.

Key Points

  • This research aims to evaluate the auditory capabilities of the Australian sea lion using advanced imaging techniques.
  • Collected specimens from various age groups to build finite element models using computed tomography (CT) imaging.
  • Predicted in-air and underwater audiograms ranging from 100 Hz to 20 kHz in air and 100 Hz to 40 kHz underwater.
  • Compared findings with existing data from California sea lions to assess auditory sensitivity.
  • Predicted audiograms suggest a close alignment with California sea lions, indicating potential for environmental reference points.
  • Provided the first quantitative estimates of auditory sensitivity for Australian sea lions.
  • Results support methodologies applicable to other marine mammals for hearing assessments.

Cite This Study

Wei et al. (2025) studied this question.

synapsesocial.com/papers/6a056824a550a87e60a2089fhttps://doi.org/10.1121/10.0040036
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