Every submarine since Drebbel's first in 1578 has been able to reach the ocean floor. Not all have been able to resurface, though.
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sea mountain
A submarine canyon refers to a steep-sided valley cut into the sea floor of the continental slope. It is formed through turbidity currents that carve out the submarine canyons in the continental shelf.
Floor scrubbers such as mops, dust mops, and other such hand scrubbers were invented in the 1920s. However, the electric floor scubber was not invented until the 1960s.
Submarine canyons are a common feature of the sea floor that can be cut by turbidity currents. These currents are fast-moving underwater sediment flows that can transport large amounts of sediment and carve deep channels into the ocean floor. With their high energy and ability to transport sediment, turbidity currents are capable of reshaping submarine canyons over time.
A good example of this is the unmanned submarines that they use to look for wreakage far under the ocean. The unmanned submarine uses sonar to map the floor of the ocean, and sends back the images while it moves. The darkness of that depth does not hinder the submarine.
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It is varied and includes features such as submarine canyons, atolls, and mid-ocean ridges.
in the olden days slaves in America got bored so they invented a song by tapping on the floor to make a tune so that they could have music while they worked
A submarine canyon refers to a steep-sided valley cut into the sea floor of the continental slope. It is formed through turbidity currents that carve out the submarine canyons in the continental shelf.
What in America is called the 'first floor' is called the 'ground floor' in Britain. The floor immediately above that is the 'first floor', what Americans would call the 'second floor'.
It is varied and includes features such as submarine canyons, atolls, and mid-ocean ridges.