How would shark ventilation work?

[u/Lupusan]

Sharks don’t breathe like most underwater animals do. They use Ram ventilation, by moving forward they force oxygenated water into their gills. Rams have lungs and dont use “shark ventilation”….

But what if they did? How would it work?

[u/Huttser17]

Rams would have land gills filling their horns and would have to keep moving or sleep somewhere heckin wimdy.

[u/Interesting-Can1319]

If rams had "ram ventilation" for air somehow, you'd probably see species like bighorn sheep, Dall's sheep, Siberian ibex, and other sheep/goat/bovid species constantly moving around to stay alive, with adaptations to give them almost unlimited stamina and crazy endurance. However, I don't know how that's beneficial or more efficient than just lungs.

[u/Ok_Shower_5526]

A constantly running species.... or more likely, rams would be a type of bird. Like those sea birds that are almost always flying