Duck Quacks Don't Echo

Season 1 Episode 11

Swimming Pool Surprise

Aired Monday 10:00 PM Feb 24, 2014 on National Geographic
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Episode Summary

Swimming Pool Surprise
The more a pool smells like chlorine, the dirtier it is. A blue whale has a heart the size of a car and its aorta is so big, a person could crawl through it. DUCK QUACKS DON'T ECHO airs Mondays on National Geographic Channel.

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