Screaming to be Heard Over Ship Noise is Taking It Out of Killer Whales

// added September 14, 2009 // 1 comment //
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TheodoreSouza

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http://www.treehugger.com/files/2009/09/ship-noise-forcing-killer-wha...

Researchers have found that because of nearby ship noise, killer whales are having to make louder sounds to be able to communicate with one another. A particular group of killer whales in Washington's Puget Sound, called the Southern Residents, seem to be getting hit particularly hard with the strain of raising their voices. They're adapted to eat specifically salmon, and the effort going in to talking to one another may mean that they're having to work harder to hunt all while having less salmon to consume.
  1. groups:
    Green
  2. tags:
    Whales,  Salmonella,  killer whales

1 comment // Screaming to be Heard Over Ship Noise is Taking It Out of Killer Whales

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