The ocean depths refer to the vast and dark regions of the ocean that lie below the surface. These areas are divided into different zones, including the epipelagic zone, where sunlight penetrates, and the deeper bathypelagic, abyssopelagic, and hadalpelagic zones, which are characterized by increasing pressure and darkness. The ocean covers about 71% of the Earth's surface, and its depths can reach over 36,000 feet in places like the Mariana Trench. Life in the ocean depths is unique and adapted to extreme conditions. Organisms such as anglerfish, giant squids, and various types of bioluminescent creatures thrive in these environments. Many of these species have developed special features, like large eyes or the ability to produce light, to survive in the dark. The ocean depths remain one of the least explored areas on Earth, holding many mysteries yet to be discovered.