Primarily Japan and also the Western Pacific ocean.
The Deep-sea Debris Database provides marine debris data collected from deep-sea videos and photos. They have been taken during research surveys by submersible, “SHINKAI6500”, “HYPER-DOLPHIN”, etc., owned by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC).
You can see lists of debris classified by shapes/materials; we have categorized them based on their videos and photos. In addition, you can find more about debris sunken to deep-sea by the locations where they were taken on videos and photos. The videos and photos are also available on this website.
Link to website