e360 digest


01 Aug 2013: Whales Shown to Flee
From Mid-Frequency Military Sonar

Two new studies show that the use of military sonar can provoke whales to flee, providing evidence that the naval operations may be a factor in mass strandings of whales and dolphins worldwide. According to one study, most marine mammal strandings related to naval sonar exercises involve beaked whales, a
Blue whale sonar study
Wikimedia Commons
A blue whale
notoriously shy species that responds to noise levels well below those used by the U.S. Navy, which partially funded both studies. Scientists believe the beaked whales may interpret the sonar noises as the sounds of killer whales. A separate study found that even mid-frequency sonar affected the behavior of blue whales, the largest animals on earth, especially during feeding. After exposing tagged blue whales to simulated military sonar and other mid-frequency sounds, the animals often ceased feeding, increased swimming speeds, and traveled away from the sound. “For whales and dolphins, listening is as important as seeing is for humans — they communicate, locate food, and navigate using sound,” Sarah Dolman of the international nonprofit Whale and Dolphin Conservation told the Guardian. “Noise pollution threatens vulnerable populations, driving them away from areas important to their survival, and at worst injuring or even causing the deaths of some whales and dolphins.”

Email      Recommend     Tweet     Stumble Upon     Digg     Share    


Yale
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
.

SEARCH e360



Donate to Yale Environment 360
Yale Environment 360 Newsletter

CONNECT

Twitter: YaleE360
e360 on Facebook
Donate to e360
View mobile site
Bookmark
Share e360
Subscribe to our newsletter
Subscribe to our feed:
rss


ABOUT

About e360
Contact
Submission Guidelines
Reprints

e360 video contest
Yale Environment 360 is sponsoring a contest to honor the best environmental videos.
Find more contest information.


DEPARTMENTS

Opinion
Reports
Analysis
Interviews
Forums
e360 Digest
Podcasts
Video Reports

TOPICS

Biodiversity
Business & Innovation
Climate
Energy
Forests
Oceans
Policy & Politics
Pollution & Health
Science & Technology
Sustainability
Urbanization
Water

REGIONS

Antarctica and the Arctic
Africa
Asia
Australia
Central & South America
Europe
Middle East
North America

E360 en Español

Universia partnership
Yale Environment 360 articles are now available in Spanish and Portuguese on Universia, the online educational network.
Visit the site.

e360 MOBILE

Mobile
The latest
from Yale
Environment 360
is now available for mobile devices at e360.yale.edu/mobile.

e360 VIDEO

Warriors of Qiugang
The Warriors of Qiugang, a Yale Environment 360 video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject). Watch the video.


header image
Top Image: aerial view of Iceland. © Google & TerraMetrics.

e360 VIDEO

Colorado River Video
In a Yale Environment 360 video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.

 

OF INTEREST



Yale