• During the survey work, an underwater microphone called a hydrophone will be used to record the high frequency sounds of harbour porpoises and white-beaked dolphins for analysis.

    BBC: West coast whales, dolphins and sharks to be surveyed

  • The scientists, based in the Netherlands and Germany, used an ultra-speed camera and a hydrophone in an aquarium to record what happened when seven individual shrimps closed their claws in response to being tickled by a paintbrush.

    BBC: Shrimp, bubble and pop

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