The cost will be approximately from $200 to $500 inclusive of the course and actual diving component. The Professional Association of Diving Instructors offers an online segment of the training which should cost the trainee around $100. This will cover instructions but not the scuba diving trips in open waters. Prices fluctuate primarily because of the open water certification which can be as high as $500 or even more. There are diving shops that give packages of $200 to $350 for three dives.
1 Narcolepsy is caused by the loss of the two brain chemicals called hypocretins. 2  Researchers have identified a gene that is linked to narcolepsy.  The main symptoms of narcolepsy are excessive daytime sleepiness and abnormal rapid eye movement (REM) sleep.
Narcolepsy is a neurological disorder that affects the control of sleep and wakefulness. People with narcolepsy experience excessive daytime sleepiness and intermittent, uncontrollable episodes of falling asleep during the daytime. These sudden sleep attacks may occur during any type of activity at any time of the day.