Saipan is located between the Pacific and Philippine Sea. Standing on the highest peak on the island and overlooking the scenery of the super island, by the refraction of the sun, one sees that the sea has light green, dark green, dark blue, blue ink of different colors. That unfathomable blue ink is the world's deepest trench — more than 10,000 meters deep Mariana Trench. Not to be missed on the island is diving. The Saipan authorities take measures to protect the surrounding waters, so that large areas of beautiful coral reefs can be preserved completely. The surrounding waters attract a lot of tropical fish.