To use a snorkel.
A snorkel parka.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
To put into a liquid; to immerse; to plunge into and keep in.
To sink out of sight.
To engulf or overwhelm.