Why is a submersible needed to descend the bottom parts of oceans?

A submersible is needed to descend to the bottom parts of the ocean because the water pressure at great depths is extremely high. The pressure at the bottom of the Mariana Trench, the deepest part of the ocean, is over 1,000 times greater than the pressure at sea level. This pressure would crush a normal submarine.

Submersibles are specially designed to withstand the extreme pressure of deep ocean water. They are made of thick, reinforced materials and have a small interior volume to minimize the amount of water that can enter the vessel. Submersibles also have a variety of safety features, including redundant power systems and emergency escape hatches.

Despite the challenges of operating in the deep ocean, submersibles have allowed scientists to explore and study the deepest parts of the world's oceans. These expeditions have revealed a fascinating world of unique and diverse marine life. Submersibles have also been used to collect samples of deep-sea minerals and to study the geology of the ocean floor.

Here are some specific examples of why a submersible is needed to descend the bottom parts of oceans:

* To reach the deepest parts of the ocean, where the water pressure is extremely high.

* To explore and study the unique marine life that lives in the deep ocean.

* To collect samples of deep-sea minerals and to study the geology of the ocean floor.

* To conduct scientific research and experiments in the deep ocean.

* To perform underwater maintenance and repair work on offshore structures.