But a whale can no more force water through its spiracle or blow-hole than you or I through our nostrils.
No, he breathes through his spiracle alone; and this is on the top of his head.
In some of the sharks, and especially the rays, a spiracle or open foramen remains behind the eye.
Laterostigmatal: situated on the side, immediately above the spiracle.
Atrium: a chamber just within the spiracle and before the occluding structure to the trachea.
In many sharks and in sturgeons the spiracle forms a conspicuous opening just behind the eye.
The lips are usually horizontal, but sometimes they dip so as to make the spiracle appear open.
In all four stages, spiracle persistent, and pigmentation resembling that of early stages.
In common usage the hyomandibular cleft is called the spiracle, and the series of clefts behind it the branchial clefts.
There is on the side of each of these segments near its front margin a tiny opening or pore called a spiracle.