Articles

SCUBA Diving and Asthma

by Nerissa Penfold

For as long as I can remember I wanted to SCUBA dive. I remember being fascinated by my dad’s cylinders of air with yellow flaking paint and belts of lead weights that lay around the house, and the promise of what lay beneath the surface of the sea. As luck would have it, by the time I seriously started thinking about diving I had been diagnosed with adult asthma.

Kakaban, Primordial Sea

by Scuba Diver Australasia

Drawing a deep breath, I dive into a primordial sea. My vision opens to a sea of jellies swimming gracefully in a green aquaria, visibility remaining clear at 5m as long as I am careful not to touch bottom and stir up the silt accumulated over the last 19,000 years.

Working with HMI lights

by Scuba Diver Australasia

HMI technology is not new. It evolved in the late 1960s when lamp developer Osram began producing HMI bulbs for the film industry at the request of German television seeking a less expensive alternative to incandescent lights. Ironically, HMI is now much more expensive than halogen and tungsten.