The "Deep Sea" refers to the part of the ocean that is below 200 meters (656 feet) in depth. This region is characterized by high pressure, low temperatures, and complete darkness. It is home to unique ecosystems and a variety of organisms, many of which are adapted to survive in extreme conditions. Exploration of the deep sea is challenging due to its inaccessibility. Technologies like submersibles and remotely operated vehicles (ROVs) are used to study this mysterious environment. The deep sea plays a crucial role in global climate regulation and is a source of valuable resources, including minerals and potential pharmaceuticals.