How did gills evolve?

by Sanjay Kottaram|16 Mar 2021|Game|Freshwater Fishing|39 views
Ancient fish evolved gills to survive acidic oceans. Fish gills evolved to balance pH, not breathe, suggests a new study. This goes against the traditional assumption that gills first evolved so fish could get more oxygen as they became bigger and more active, say researchers in a recent issue of Scientific Reports.

Herein, when did gills first appear?

about 419 million years ago

Additionally, when did lungs evolve?

360 million years ago

How does a gill work?

How do fish gills work? Gills take oxygen out of the water and let water carry away carbon dioxide. Fish force water through their gills, where it flows past lots of tiny blood vessels. Oxygen seeps through the walls of those vessels into the blood, and carbon dioxide seeps out.

Can a human have gills?

Human lungs are not designed to extract oxygen from water to be able to breath underwater. Instead, by passing the water through their specialized organs (called gills), they can remove the oxygen and eliminate waste gases. Since humans do not have gills, we cannot extract oxygen from water.

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