Do whales drink the water they swim in?

Thanks to their specialised kidneys which can filter out high quantities of salt, whales can drink seawater. But they get most of the water they need from small sea creatures they consume, such as krill.

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By: BBC Earth
Title: Do whales drink the water they swim in?
Sourced From: www.youtube.com/watch?v=N02mwvCCdwc