Cetacean Bioacoustics with Emphasis on Recording and Monitoring

  • Tomonari Akamatsu

More than 80 cetacean species live in oceans, lakes, and rivers. For underwater navigation and recognition, whales and dolphins have developed unique sensory systems using acoustic signals. Toothed whales, such as dolphins and porpoises, have sonar using ultrasonic pulse trains called echolocations (Au, 1993). As top predators in the water, dolphins and porpoises rely on accurate and long-range sensory systems for catching prey. Dolphins have another type of vocalization called a whistle that is narrowband with a long duration.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Tomonari Akamatsu
    • 1
  1. 1.National Research Institute of Fisheries Engineering Fisheries Research Agency of JapanKamisuIbaraki

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