The creature would have to come up for air soon.

I didn't think they were ever going to come up for air.

It could be days before he's ready to come up for air, if past experience is any sign.

She eventually had to fight to come up for air.

She hadn't come up for air in what felt to him like three or four minutes.

Karen saw his head out of the water when he came up for air.

I focused on the situation as if coming up for air.

I just focused on being able to come up for air.

I could stay down because of the tube, but the others had to come up for air.

A man came up for air and went down again.