Night Diving Why dive at night Special equipment

Night Diving • • Why dive at night? Special equipment Night diving procedures Overview of night dive

Night Diving Reasons • Curiosity - offers a certain mystique and fascination • Nocturnal marine life • A new look at a familiar site • Additional chance to dive • Night diving allows you to see the natural colors of organisms by providing artificial light

Night Diving Reasons • Bioluminescence – The light produced by a chemical reaction from an organism which is transferred to light energy.

Night Diving Lights • Types of Lights – Disposable battery or rechargeable – Different types of handles

Night Diving Lights • Lights – Primary and Backup light

Night Diving Light Use • Keep lights off when underway • Make sure light is on when entering water • DO NOT point in others eyes • To gain attention • U/W Hand signals • Surface signals • Turn light off when not in use. • Light maintenance

KEY LARGO Each diver will be required to supply four new “C” batteries for your USF issued light.

Night Diving Light Stick • Each diver should be equipped with a light stick. – Battery powered or chemical stick – Allows for a visual above and below water

Night Diving Underwater Strobe Light • Serves as visual reference for the descent line and the entry/exit point.

Night Diving Procedures • Select a familiar dive site that is easy to navigate. • Plan your entry at dusk • Reduce the distance you swim

Night Diving Procedures • Remain close to your buddy • Note any special features on your buddy as well as your group leader. • Decide who will lead and who will follow • Determine what to do in the event you become separated.

Night Diving Procedures • Monitor Air Supply • Control Anxiety – Stop, Breathe, Think, Act

Overview of Night Dive Key Largo • We will be diving on a site dived earlier that day • The water temperature will not change significantly • Topside conditions will have a tendency to be coolbring something warm to wear for the return trip. • Do not turn your lights or lightsticks on while the vessel is underway • Stay with your buddy and your group • Your dive leader will review additional emergency procedures prior to the dive

Night Diving Key Largo • There will limited time between afternoon dives and night dives – 1 hour max. - bring food for between dives • Between dives remove only your tanks • After the night dive stow gear in locker • Eat dinner

Night Diving Key Largo • Spaghetti, sauce, meatballs and bread will be provided • You will need to provide a beverage & salad if desired • Don’t be late – get a good nights sleep