The Mariana Trench is located immediately east of the Marianas Island Chain. The Marianas Islands are volcanic cones produced from magma generated by the subduction in the trench. Image by the Council on Environmental Quality
The hybrid remotely operated vehicle Nereus collects sediment from the bottom of the Mariana Trench. Image by WHOI.
Nereus, the remotely-operated vehicle is designed to stand-up to the enormous pressures of the deep-sea environment. It collects sediment samples and transmits high-resolution video from world-record dive depths in the darkness of the Mariana Trench. This photo shows Nereus at launch. WHOI image.
The Mariana Trench is the boundary between two tectonic plates: the Pacific Plate and the and the Mariana Plate. Image by NOAA.
อ้างอิง * Rear-Admiral Steve Ritchie CB, DSC, FRICS.THE DEEPEST DEPTHS  * Japan Advance Science and Technology Center  * The mariana Trench- Exploration [3