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How to Understand the Breathing and Buoyancy of Fish

How to Understand the Breathing and Buoyancy of Fish

With their heavy body armour, the earliest fish were slow swimmers and lived close to the bottom of rivers or seas. As they evolved, however, they became more active, and so needed more oxygen – just as a human might gasp for breath after a sprint. Increased activity also made buoyancy control more important so […]