Many types of sea creatures live in the Mariana Trench. At the bottom, the pressure is so intense that most fish cannot live. Jellyfish, sea cucumbers, and shrimp-like amphipods populate areas at or near the bottom of the trench.
Located in the Pacific Ocean between Australia and Japan, the Mariana Trench is the deepest spot on Earth. Recent exploration has shown that the most common lifeform may be an amoeba-like animal called a foraminiferan. These creatures, often called forams, live in piles of sand. Higher in the trench, larger deep sea fish, such as the frilled shark, can be found. Some deep sea fish, including the Pacific viperfish, use bioluminescent spots to lure their prey.