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Baited cameras are highly effective at attracting scavengers and subsequent predators, [1] and are a non-invasive method of generating relative abundance indices for a number of marine species. [2] As a non-extractive technique, it offers a low environmental impact way of understanding changes in fish numbers and diversity over time.
In 1909, Albert Samama Chikly took the first underwater shot. [1] In 1910, he filmed Tuna fishing in Tunisia under the patronage of Albert I, Prince of Monaco. [2] In 1940 Hans Hass completed Pirsch unter Wasser (i.e. Stalking under Water) which was published by the Universum Film AG, lasted originally only 16 minutes and was shown in theatres before the main movie, but would eventually be ...
ROV at work in an underwater oil and gas field. The ROV is using a torque wrench to adjust a valve on a subsea structure.. A remotely operated underwater vehicle (ROUV) [citation needed] or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other general ...
Deepsea Challenger (DCV 1) was a 7.3-metre (24 ft) deep-diving submersible designed to reach the bottom of the Challenger Deep, the deepest-known point on Earth.On 26 March 2012, Canadian film director James Cameron piloted the craft to accomplish this goal in the second crewed dive reaching the Challenger Deep.
The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches.The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions.
In the deep sea, large siphonophores are found swimming. In the mesopelagic zone, Glass squid hide using their transparency. Even deeper, a gulper eel is shown gulping a mouthful. At the ocean floor, a large group of pearl octopus protect their eggs. Hydrothermal vent animals are filmed, including tube worms.
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The SOFAR channel (short for sound fixing and ranging channel), or deep sound channel (DSC), [1] is a horizontal layer of water in the ocean at which depth the speed of sound is at its minimum. The SOFAR channel acts as a waveguide for sound, and low frequency sound waves within the channel may travel thousands of miles before dissipating.