The Complete Handbook of Snorkels

Chapter 1: Understanding Snorkels

A snorkel is a tube that allows you to breathe air at the surface while your face remains submerged in water. That simple statement describes the function but not the reality. In actual use, a snorkel must solve a set of interconnected problems: water will splash into the tube, your breath will create pressure inside it, salt water or fresh water will surge up the bore with your body movement, and you'll need to clear that water periodically without inhaling it. How a snorkel handles these conditions—and whether it handles them well—depends on its design, the materials it's made from, and how well it fits your face and teeth.

For a recreational snorkeler on a calm surface, any snorkel tube will work. Submerge yourself face-down, breathe normally, and lift your head occasionally. But in real conditions—waves, currents, active movement, poor fit, or breathing urgency—the difference between a snorkel that reliably delivers air and one that floods becomes material. A dive shop owner needs to know this difference to advise customers. A rental operator needs to understand which snorkels will survive heavy use and which ones require constant maintenance. A serious snorkeler needs to match equipment to conditions. This chapter explains how snorkels actually work in water, what moves inside them, and why the design choices that manufacturers make determine whether a snorkel performs or fails.

The Core Function: Breathing at the Surface While Submerged

The fundamental purpose of a snorkel is straightforward: extend your airway above