Cameras have come a long way
Underwater video cameras have been around for decades without gaining the popularity they deserve. They have always delivered decent picture detail, but the older cathode ray tube (CRT) screens used by earlier models suffered visibility problems from glare and grayed out in bright sunlight. Bulky cables and camera heads were difficult to manage, and the systems had a heavy thirst for battery power.
Despite their drawbacks, fishermen used them to positively identify the species and size of fish they spotted on their sonar screens.Click here to read more on Underwater eyes
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