Snorkel

A snorkel is a tool that human beings use to breathe in water. A snorkel is a tube with two ends: One end goes in the swimmer's mouth. The other reaches up into the air. Then the swimmer, or snorkeler, can breathe.[1]

References
  1. Kristy Wood (March 16, 2020). "How Does a Snorkel Work?". Ocean Scuba Dive. Retrieved April 2, 2021.
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