snorkeling

thumb|A snorkeler amid corals on a [[coral reef near Fiji]]

Snorkeling (snorkelling in British and Commonwealth English) is the practice of swimming face-down in a body of water while breathing the ambient air through a shaped tube called a snorkel, usually with swimming goggles or a diving mask, and swimfins. In cooler waters, a wetsuit is also worn. The use of this equipment allows the snorkeler (British and Commonwealth English spelling: snorkeller) to observe the underwater environment for extended periods with relatively little effort, and to breathe while face-down at the surface.