Kermadec Trench

[1] The Hikurangi Plateau formed part of the Ontong-Java-Manihiki-Hikurangi large igneous province (LIP) during the Ontong Java Event 120 Ma.

The LIP-arc collision occurred 250 km (160 mi) north of its present location, but oblique plate convergence has migrated the subducted plateau southward.

[5] In 2012, deep sea researchers discovered individuals of a species of giant amphipod at the trench's lowest depths.

[6] The second-deepest fish, the hadal snailfish Notoliparis kermadecensis, is endemic to the trench and occupies a very limited depth range, 6,472 to 7,561 m (21,234 to 24,806 ft).

[8] In May 2014, the Nereus, an unmanned research submarine operated by the Woods Hole Oceanographic Institution (WHOI), imploded due to high pressure at a depth of 9,990 metres while exploring the Kermadec Trench.

Map of the Kermadec Trench and Tonga Trench , north of New Zealand, near Fiji , Tonga and American Samoa . This map can be enlarged if required.