The fish and other creatures living in the hadal zone include viperfish, jellyfish, tube worms and sea cucumbers. These animals have special adaptations that allow them to survive in the completely dark, highly pressuriz... More »

The ocean's average depth is 2.65 miles, which is equivalent to roughly 14,000 feet. The deepest known area of the ocean, Challenger Deep in the Marianas Trench, is 36,200 feet deep, 6.86 miles from the surface. More »

According to EnchantedLearning.com, dolphins live in what is known as the euphotic zone, which is sometimes referred to as the sunlit zone — part of the continental shelf that extends down to depths of anywhere from 50 t... More »

Anglerfish are deep-sea fish that live in water depths of 9,842.5 feet, which is considered the lower limit of the bathypelagic zone of the ocean. Because of its depth and lack of sunlight penetration, the bathypelagic z... More »

Sea fish feed on small creatures, smaller fish and various dead organisms that drop down from higher water levels. It is common for sea fish to go as long as two weeks without eating, as food is often scarce in the deep ... More »

Orcas, or killer whales, are most commonly found in coastal waters less than 200 meters deep. The top 200 meters of ocean are known as the epipelagic, or sunlight, zone because the sun's light is able to penetrate into t... More »

According to National Geographic, puffer fish live in sub-tropical and tropical waters. In Asia, they are commonly found around Japan, China, Taiwan and the Philippines, while in the Caribbean, they are found in the West... More »