respire

The breath of heav'n fresh-blowing, pure and sweet, / With day-spring born; here leave me to respire.

All living things respire or breathe. To many of this means that they take in oxygen and give out carbon dioxide.

It is my opinion, that these animals, while they continue in the state of larvae, respire water and not air; and that they inspire the water, not by the mask, but by their posterior part, through which also they discharge it.