Bottlenose dolphin (VIDEO)
Caption
The dolphin has a custom-made spirometry, a device to measure lung function, over the blow hole. The dolphin is then asked to do a breath hold through a hand signal from the trainer and turns around for a brief period to hold its breath underwater. Here, you can see the suction cup ECG electrodes that measure the heart rate. The dolphin then turns again and breathes into the spirometer so the volume of each breath and the oxygen and carbon dioxide of the exhaled air can be measured
Credit
Dolphin Quest - Oahu
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