SNORKELLING

WHAT IS SNORKELLING?

Snorkeling is a popular recreational activity, particularly at tropical resort and scuba diving locations. The primary appeal is the opportunity to observe underwater life in a natural setting without the complicated equipment and training required for scuba diving. It appeals to all ages because of how little effort there is.

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EQUIPMENT

The equipment includes:

a dive mask, a shaped tube, called a snorkelk, and usually fins. In cooler water a wetsuit is usually worn.

Caring for your snorkel is important because that is what keeps you from having to constantly lift your head out of the water to breathe. The fact that it goes in your mouth is also an important reason for care and maintenance.

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UNDERWATER SCIENCE

The ear and equalising.

- divers equalise the air pressure in his middle ear during descent, a diver must manually open his Eustachian tube to allow high pressure air to fill the middle ear. This is easier than it sounds. Divers can equalize their ears using any of the following techniques.

Buoyancy

- an upward force exerted by a fluid that opposes the weight of an immersed object

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