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!
Wouldn’t Figure 2 be like a person playing the trumpet with their nose? I’m not saying it’s not possible, but…
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!
Jip their blow hole is just their nostrils that moved up to the top of their head over generations.