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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 ...
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If a cage-free dive with sharks, hundreds of fish, and stingrays sounds like your kinda thing, or taking an immersive yoga class while surrounded by the underwater world is where you find your ...
In 1992 the National Association of Underwater Instructors (NAUI) became the first mainstream US agency to accept IANTD qualifications, and the Sub-Aqua Association (SAA) became the first UK agency to recognise IANTD certifications in 1993. In 2000, IANTD introduced a free-diver program prepared by Divetech Ltd of Grand Cayman. [3]
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
While ocean color is a key theme of ocean optics, optics is a broader term that also includes the development of underwater sensors using optical methods to study much more than just color, including ocean chemistry, particle size, imaging of microscopic plants and animals, and more.
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
Snell's window (also called Snell's circle [1] or optical man-hole [2]) is a phenomenon by which an underwater viewer sees everything above the surface through a cone of light of width of about 96 degrees. [3] This phenomenon is caused by refraction of light entering water, and is governed by Snell's Law. [4]