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posted by martyb on Sunday June 21 2020, @02:31PM   Printer-friendly
from the whisper-me-Ishmael dept.

Whales are disturbed by engine noise from boats:

To get their patrons the best possible view, whale watching companies and the captains of their ships tend to position vessels as close as they can.

[...] "Unlike humans, the dominant sense in whales is not sight -- it is hearing," Australian biologist Kate R. Sprogis, research fellow at Aarhus University in Denmark, said in a news release. "As such, a whale may not be able to see a whale-watch boat at 100 meter distance, but they are likely to hear it, so it makes sense to consider this when stipulating whale-watching guidelines."

Using underwater speakers and drone cameras, scientists tested the effects of different decibel levels on the behavior of humpback whales in the Exmouth Gulf, located off the western coast of Australia.

[...] When researchers subjected mothers and calves to boat-noise levels of 172 decibels, a very loud boat, from a distance of 100 meters, the mothers and calves spent 30 percent less time resting, swam at faster speeds and doubled their breathing rates.

When the boats moved further away, disturbed whales usually returned to resting. However, previous studies suggest repeated disturbances can leave moms without the energy to feed their calves and evade predators.

Journal Reference:
Kate R Sprogis, Simone Videsen, Peter T Madsen. Vessel noise levels drive behavioural responses of humpback whales with implications for whale-watching, (DOI: 10.7554/eLife.56760)


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  • (Score: 2, Interesting) by oumuamua on Sunday June 21 2020, @06:41PM (2 children)

    by oumuamua (8401) on Sunday June 21 2020, @06:41PM (#1010726)

    I'm saying the whales will get nothing but a deaf ear when they complain about noise, because even if the boats could be quieter some marketer will decide that is a bad thing:
      https://www.washingtonpost.com/business/economy/americas-best-selling-cars-and-trucks-are-built-on-lies-the-rise-of-fake-engine-noise/2015/01/21/6db09a10-a0ba-11e4-b146-577832eafcb4_story.html [washingtonpost.com]

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  • (Score: 0) by Anonymous Coward on Sunday June 21 2020, @07:08PM (1 child)

    by Anonymous Coward on Sunday June 21 2020, @07:08PM (#1010741)

    We have done something deeply damaging to men. Masculinity is protective and creative, but it has been warped to be toxic and destructive. Why do American men seek to pollute their environment with noise and worse instead of protecting it for their children?

    • (Score: 0) by Anonymous Coward on Sunday June 21 2020, @09:43PM

      by Anonymous Coward on Sunday June 21 2020, @09:43PM (#1010807)

      Because big booms! Arrrrrrh! Manly shit is blowing shit up. Not some pansy crap like making a fruitcake.