How does a pufferfish get oxyen though its body?

Pufferfish, like other fish, extract oxygen from water using their gills. Water flows over the gill membranes, where oxygen is absorbed into the bloodstream and carbon dioxide is expelled. Their gills have a large surface area and are highly vascularized, allowing for efficient gas exchange. Additionally, pufferfish can regulate their buoyancy by inflating their bodies, which helps them access different water layers where oxygen levels may vary.