Blow hole
Dolphins breathe through the 'blow hole' in the top of their heads, surfacing from underwater to blow out the Carbon Dioxide and draw in oxygen.
Through a blow hole, just like all other dolphins
They need them to breathe through. Dolphins, being mammals, have to inhale air and hold their breath underwater.
To breathe.
Dolphins have blow holes, not blow horns. The blow hole allows the dolphin to inhale and exhale air. The blow hole is analogous to a nostril in other mammals.
To breathe
Dolphins (and whales, etc) breath through the blow holes on their head.
Dolphins sometimes blow air bubbles when they are bored.
They breathe through a blow hole. For more information check the related link below..
Dolphins don't have a nose instead of a blow hole because they aren't supposed to breath just be able to blow air and water out of it.
They are mammals so they breathe in air like us. When they are swimming, its easier to breathe through their blow hole then their mouth so they dont have to completely come up out of the water to take in a breath
Because they breathe through a blow hole when they swim to the surface then a whole bunch of water comes out of the blowhole then they breathe after the water comes out then they close the blow hole and then they swim around and be awesome