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Dolphin Consumption On Rise In Poorer Nations

Dolphin Consumption On Rise In Poorer Nations

Dolphin for dinner is becoming more common as people in poorer nations struggle to put...
Whaling Vs. Whale Watching

Whaling Vs. Whale Watching

Iceland Review has conducted interviews with Konrád Eggertsson, a whaler, and Hördur Sigurbjarnarson, running an...
Orcafilm: Das Ende Der Freiheit

Orcafilm: Das Ende Der Freiheit

<br /><br /><br />Was ist dein Weihnachstwunsch für Wale und Delfine? Schreib uns eine Mail...
Sperm Whale Jaw For Sale

Sperm Whale Jaw For Sale

Further to the removal of the jaw and teeth from the body of a sperm...

Humpback Whale's change their Song in Response to an Noise Source 200 km Away

PLoSOne reports that Sounds made by technology used to monitor fish stocks may affect how baleen whales communicate, even at great distances.

Marine biologists working in US waters noticed that humpback whales sang less during the fall/autumn of 2006, when a low frequency signal showed up in their recordings. They eventually traced the signal to some acoustic sensing equipment that was part of a scientific study off Maine’s coast, about 120 miles from where they were studying seasonal changes in whale songs in Georges Bank.

The scientists recorded more frequent whale vocalizations during the same time of year in 2008 and 2009, when the study’s Ocean Acoustic Waveguide Remote Sensing equipment was not being used. This suggests the whales reacted to the low-level sounds by silencing their songs.

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0029741

Risch D, Corkeron PJ, Ellison WT, Van Parijs SM (2012) Changes in Humpback Whale Song Occurrence in Response to an Acoustic Source 200 km Away. PLoS ONE 7(1): e29741. doi:10.1371/journal.pone.0029741