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2. Dive light - Wikipedia

   en.wikipedia.org/wiki/Dive_light

   Backup lights are carried in case the primary light fails during the dive. This is particularly important in cave and wreck penetration diving, where the light is required to facilitate navigation out of the enclosed space. Cave divers are trained to carry three dive lights as a result of an accident analysis by Sheck Exley published in 1977 ...

3. Index of recreational dive sites - Wikipedia

   en.wikipedia.org/wiki/Index_of_recreational_dive...

   Dosthill quarry – Flooded quarry in England used for scuba diving; Dragon Hole – Deep underwater sinkhole in the South China Sea; SMS Dresden (1917) – Light cruiser of the German Imperial Navy; SS D.R. Hanna – 552-foot steel freighter that sank on Lake Huron in 1919; USCGC Duane – United States Coast Guard cutter

4. Canoe and kayak diving - Wikipedia

   en.wikipedia.org/wiki/Canoe_and_kayak_diving

   Canoe diving and Kayak diving are recreational diving where the divers paddle to a diving site in a canoe or kayak carrying all their gear in or on the boat to the place they want to dive. Canoe or kayak diving gives the diver independence from dive boat operators, while allowing dives at sites which are too far to comfortably swim, but are ...

5. Fishing light attractor - Wikipedia

   en.wikipedia.org/wiki/Fishing_light_attractor

   In this video, dozens of 15-18 inch speckled trout are attracted to a 1000 W green light mounted on a pier. A fishing light attractor is a fishing aid that uses lights attached to a structure above water or suspended underwater to attract fish and members of their food chain.

6. Outline of recreational dive sites - Wikipedia

   en.wikipedia.org/wiki/Outline_of_recreational...

   Wall diving is a form of reef diving, where The main characteristic of the sites is that the terrain is predominantly near vertical. The height of the wall can vary from a few metres to hundreds of metres. [1] The top of the wall must be within diving depth, but the bottom may be far below or reasonably close to the surface.

7. Glow stick - Wikipedia

   en.wikipedia.org/wiki/Glow_stick

   A glow stick, also known as a light stick, chem light, light wand, light rod, and rave light, is a self-contained, short-term light-source. It consists of a translucent plastic tube containing isolated substances that, when combined, make light through chemiluminescence. The light cannot be turned off and can be used only once.