Military submarines have different operating depths, depending on the submarine. You guessed this already, and the actual numbers are classified. From a few hundred meters to several hundred meters pretty much covers it. These are the "true" submarines, and they are the ones capable of independent operation for extended periods. If we move to the submersible, which is a "submarine" that is operated from a support vessel, the Trieste usually comes to mind. Trieste, which is of Swiss design, is a bathyscaphe (Swiss for "deep boat"). It was he deepest diving submersible, and it went to the bottom of the Marianas Trench at a point called the Challenger Deep. At about 10,900 meters, or some 35,761 feet, it is the deepest point in any ocean of the world.
Animals can survive by their gills and they have oxygen in their gills. Humans have been able to survive in the ocean only because of aqua lung and also submersibles also known as submarine's
Deep sea submarine tours are not currently available in this area.
Classified.
the nautilus was a submarine
Some dangerous deep sea creatures would include: the giant squid, frilled shark, anglerfish, and goblin shark. Most deep sea creatures pose no threat to humans as they are located at depths in which you would need a submarine to reach.
200 ft
At the mouth of a submarine canyon, you would expect to find a submarine fan. This is a large accumulation of sediment that has been transported down the canyon and deposited on the ocean floor as the canyon widens and reaches the abyssal plain.
in excess of 400 feet
They go underground and see what there if it is deep they can use a submarine
They go underground and see what there if it is deep they can use a submarine
To date, no deaths have been conclusively linked to the Loihi submarine volcano, which is located off the southern coast of Hawaii. The volcano is deep underwater and not a direct threat to human life.
The pressure gets too great and the submarine implodes. The deeper you go under water the more pressure there is.