Electric and magnetic senses in marine animals, and potential behavioral effects of electromagnetic surveys

Authors: Nyqvist D, Durif C, Johnsen MG, De Jong K, Forland TN, Sivle LD

Year: 2020 Mar

Category: Marine Biology

Journal: Mar Environ Res

Institution: Mar Environ Res

DOI: 10.1016/j.marenvres.2020.104888

URL: https://www.ncbi.nlm.nih.gov/pubmed/32072990

Abstract

Overview

Electromagnetic surveys, used to map petroleum deposits beneath the seabed, generate electromagnetic fields whose impacts on marine animals remain largely unexplored and potentially hazardous.

Findings

  • Many marine species can detect the electric and magnetic fields produced during electromagnetic surveys.
  • These fields may influence the natural behavior of animals sensitive to electromagnetic cues, posing risks particularly during key behavioral periods such as migration or local orientation.
  • Electrosensitive species might experience disrupted behaviors due to anthropogenic electric fields.

Conclusion

The review highlights significant gaps in research concerning the effects of electromagnetic fields on marine life, stressing an urgent need for studies to address the potential behavioral disruptions in magneto- and electrosensitive marine animals.

marine animals electromagnetic fields behavior changes electrosensitivity magnetosensitivity environmental impact
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