At the end of the Coral Forest, there exists a long entrance to a seafloor canyon, also known as a seafloor trench. The trench spans roughly seventy to eighty hundred meters across. Every five meters along both sides of the trench, tall coral trees of several tens of meters high can be found. These coral trees are entirely covered in phosphorescent algae, lighting up this Road of Faith like rows of underwater street lamps. Various types of algae plants grow entwined among the coral trees, among which small deep-sea fish are constantly scuttling in and out. Due to the permanent absence of natural predators, these small sea fish are not afraid of humans. They often leisurely swim around the sea race, and some sea race even tend to carry food to feed them, often drawing in a large crowd of these small fish.