Question:
Do lung fish have both gills and lungs? How does this work?
Replies:
Lungfish have external gills that act as lungs when the lungfish is out of
the water. The gills work as gills in the water, and as long as they are
kept moist, can bring in oxygen when on land. Some lung fish are even
obligated to breath air often and not just stay in the water.
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