Two diving instructors ~ glide across the reef ~ searching for anything curious or unusual to observe and possibly photograph.
Underwater dive guiding ~ as a full time job ~ day after day in the underwater environment ~ is quite demanding and taxing on the human body.
An elevated partial pressure of nitrogen gases in the body, somewhat has a ‘narcotic’ effect whilst diving. Knowing your ‘comfort zone’ is key to survival.
Explorers are quite a different breed from anyone else and you have to be ‘head over heels’ in love with SCUBA to truly appreciate ~ underwater exploration!