David Gallo as marine biologist said that the earth has the amount of water and we called it ocean, besides we can be divided into two parts between shallow water and deep water. This is will be focused on the ecosystems in the deepest water with color which is black or dark. First, they can find corals with sophisticated technology such as submarines and robots until the floor ocean. It is an amazing place with a full of life creatures, while it found in the deepest trenches of Mexico. Then, find some animals such as jellyfish which life in a colony and it gives an amazing color because of it is habitat in the sea floor. On the other hand, poisonous water in deep on water also exist in here, and also a river in the sea floor makes it wonderful and beautiful of marine life. David Gallo recommended that people's pattern of life have to changes for avoiding damage in the ocean since seven billion people give impact on ocean such as drink and for food.