Izu Ogasawara Trench

The Izu-Ogasawara Trench (伊豆・小笠原海溝, Izu-Ogasawara Kaikō), also known as Izu-Bonin Trench, is an oceanic trench in the western Pacific Ocean, consisting of the Izu Trench (at the north) and the Bonin Trench (at the south, west of the Ogasawara Plateau).

It stretches from Japan to the northern most section of Mariana Trench. The Izu-Ogasawara Trench is an extension of the Japan Trench. Here, the Pacific Plate is being subducted beneath the Philippine Sea Plate, creating the Izu Islands and Bonin Islands on the Izu-Bonin-Mariana Arc system.

It is 9,780 metres (32,087 ft) at its deepest.