The Ocean Depth is divided into five layers: the upper ocean (0 meters to 200 meters), the mesopelagic layer (200 meters to 1 kilometer), the deep ocean layer (1 kilometer to 4 kilometers), the abyssal layer (4 kilometers to 6 kilometers), and the ultra-deep ocean layer (below 6 kilometers).

The water layer from 200 meters to 1000 meters deep is called the mesopelagic layer. Here, sunlight cannot penetrate all the seawater, and the light is very weak, giving the seawater a dark blue color. This is how our Noble Blue series come from.