The Narwhals heart

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=u-opKujOlRc

The amazing sound of the pulsing heart of a young male narwhal who was released from a net. He sits quietly while his heart rate is measured during a health ...

narwhal, diving, heart rate, pulse, swim, Arctic, sounds, heart, heart beat, marine mammals, dolphins, whales
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