Dolphins can't breathe under water because they don't have gills. They have lungs just like people and must breathe air. Dolphins have to live in water because they would overheat and dry out on land. Their bodies and body functions have evolved for life in the water.
Dolphins can't breathe under water because they don't have gills. They have lungs just like people and must breathe air. Dolphins have to live in water because they would overheat and dry out on land. Their bodies and body functions have evolved for life in the water.