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2. Aquascope - Wikipedia

   en.wikipedia.org/wiki/Aquascope

   An aquascope (also called bathyscope) is an underwater viewing device. It is used to view the underwater world often from dry land or a boat. It eliminates the water surface glare and allows viewing as far as water clarity and light permit. The underwater viewer can be used for observing reefs, checking boat moorings, secchi disks and other ...

3. Underwater vision - Wikipedia

   en.wikipedia.org/wiki/Underwater_vision

   Underwater vision is the ability to see objects underwater, and this is significantly affected by several factors. Underwater, objects are less visible because of lower levels of natural illumination caused by rapid attenuation of light with distance passed through the water. They are also blurred by scattering of light between the object and ...

4. Periscope - Wikipedia

   en.wikipedia.org/wiki/Periscope

   Periscopes permit view outside of the vehicle without needing to cut these weaker vision openings in the front and side armour, better protecting the vehicle and occupants. A protectoscope is a related periscopic vision device designed to provide a window in armoured plate, similar to a direct vision slit.

5. 15 Decked-Out Superyachts of the Rich and Famous - AOL

   www.aol.com/finance/15-decked-superyachts-rich...

   Features: Two helipads, underwater viewing room, nightclub, saltwater pool, on-deck jacuzzi. 15. Lady Lara: Owned by Alexander Machkevitch. Wikipedia Commons/102Legobrick (CC BY-SA 4.0)

6. Calypso (camera) - Wikipedia

   en.wikipedia.org/wiki/Calypso_(camera)

   Assembly and disassembly underwater are not possible without flooding the camera. There are three basic components to the camera: the internal mechanism, an outer shell, and the interchangeable lens. The camera body consists of two black enameled cast alloy parts; one piece carries all the camera parts (winder, shutter, and viewfinder), which is lowered into the o

7. Seaview SVII - Wikipedia

   en.wikipedia.org/wiki/Seaview_SVII

   The Seaview SVII is an underwater camera designed by the Catlin Seaview Survey team, intended to photograph coral reefs to provide visual documentation of a reef's health. . The camera is designed to be controlled by a diver in shallow waters, and is propelled at a constant slow speed by a propeller mounted near the rear of the cam