If I’m not mistaken, dolphins can’t physically breathe through their mouth. Like, their mouth doesn’t have a tube that connects to their lungs. So figure 2 is the only way it could work.
Just researched this and apparently there has been at least one recorded case of a dolphin mouth-breathing. It likely only occurs when there’s something seriously wrong with the blowhole, but it can be done!
If I’m not mistaken, dolphins can’t physically breathe through their mouth. Like, their mouth doesn’t have a tube that connects to their lungs. So figure 2 is the only way it could work.
Can confirm
Just researched this and apparently there has been at least one recorded case of a dolphin mouth-breathing. It likely only occurs when there’s something seriously wrong with the blowhole, but it can be done!
Oh, I didn’t know that!