Navy Sonar Kills Whales

Low Frequency Active (LFA) Sonar, developed by the Navy to detect “quiet”

submarines, is one of the loudest sounds ever created by man and can

travel hundreds of miles through ocean waters.

Because LFA sonar operates

at the same frequency as whale communications, it interferes with whale

feeding, breeding, and migration — often to a deadly effect. LFA can

cause whales and dolphins to become so disoriented that they strand

themselves on beaches.

The Navy is ignoring LFA sonar’s potentially deadly

impacts on marine life and has applied for a permit from the National

Marine and Fisheries Service (NMFS) to “take” marine mammals when using

the LFA Sonar system. W

While the Marine Mammal Protection Act (MMPA) does

allow for such permits to be issued when small numbers of whales and

dolphins (in limited geographic areas) are involved, the Navy’s proposal

would use LFAS in at least 80% of the world’s oceans (and essentially any

part of the oceans during times of warfare or “during periods of

heightened threat conditions”).


  1. NMFS is accepting public comment on the Navy’s proposed rule until

    Friday, May 18th. Please send comments, asking the NMFS to deny the

    Navy’s requested permit, to:

    Donna Wieting, Chief,

    Marine Mammal Conservation Division, NMFS

    1315 East-West Highway

    Silver Spring, MD 20910

    FAX: 301-713-4060 (no emails accepted).

  2. If you live near Los Angeles, Honolulu, or Silver Spring, MD, you can

    attend one of the NMFS’public hearing on the Navy’s proposed rule on LFA


    Contact Earth Island Institute:

    Phone (415) 788-3666

    Fax (415) 788-7324

    email: for more info.

    Your voice is

    critical to save our whales!

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