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Syndication

Mon, 24 March 2014
Norteko Ferrokarrilla/2014-03-22/Bale zaharren kanta

Baleek kanta egiten dute, baina zertarako? Bada, komunikatzeko kantatzen dute, baina batzuek ez horretarako bakarrik. Horretarako izateaz gain, bale horzdunek soinua sonar moduan erabiltzen dute. Ehizean harrapakinak detektatzeko, eta ur sakon eta ilunetan inguruari antzemateko. Aste honetan, sonarra erabiltzen zuen bale zaharrenaren fosilaren berri izan dugu; ikerketak 28 milioi urteko fosila dela dio.

 

Direct download: NFXVIII-28a.mp3
Category:science -- posted at: 6:14am EDT