Lives in the deep sea have unique form. Sometimes they become very large size. For example, Giant squid can grow to a total length of 10 meters or more. And then there is a creature that shines with a beautiful radiance. There are many unknown species of deep-sea creatures. Because, they are found in very small numbers across vast areas. As a result, researchers find it difficult to collect the deep-sea creatures they are studying according to schedule., The hydrothermal vent