The deep ocean floors, also known as the abyssal plains, are vast, flat areas located at depths of about 3,000 to 6,000 meters (9,800 to 19,700 feet) below the ocean surface. These regions cover more than 50% of the Earth's surface and are characterized by cold temperatures, high pressure, and complete darkness. The sediment on the ocean floor consists of tiny particles, including organic matter and minerals, which accumulate over time. Life on the deep ocean floors is unique and adapted to extreme conditions. Organisms such as deep-sea fish, giant squids, and benthic invertebrates thrive in this environment, often relying on chemosynthesis rather than sunlight for energy. The deep ocean is also home to underwater features like mid-ocean ridges and trenches, which play a crucial role in Earth's geology and ecosystem.