A new science report says big sea animals are living very deep in the Pacific Ocean. The animals were found in two places called the Kuril–Kamchatka and Aleutian trenches. These places are in the northwest part of the Pacific Ocean. Scientists from China and Russia used a special machine to go more than 31,000 feet (9.5 kilometers) under the sea. They found tubeworms and mollusks in very cold, dark places with strong water pressure. People used to think that big animals could not live in places like this. This new report shows that they can. The animals live by using a process called chemosynthesis. Tiny microbes turn carbon in the ocean into chemicals with energy. These chemicals help bigger animals live. Some animals eat the microbes. Others share the food with them. One expert said this is a new way of life that scientists did not expect. Another scientist, Julie Huber, said the area was too hard to explore before. Now, this new information can help scientists learn more about sea life and look for other unknown places in the deep ocean.