Snorkeler vs. Snorkeller — What's the Difference?

A breathing apparatus for swimmers and surface divers that allows swimming or continuous use of a face mask without lifting the head to breathe, consisting of a tube that curves out of the mouth and extends above the surface of the water.

A person who uses a snorkel to do snorkelling.

A retractable vertical tube in a diesel-engine submarine that contains air-intake and exhaust pipes for the engines and for ventilation, permitting extended periods of submergence at periscope depth.

To swim or dive under water with a snorkel and often with a face mask and fins.

A person who uses a snorkel to do snorkeling.