and Vescovo successfully explored the Kebrit Brine Pool in the submersible. Ring of Fire Expeditions Between 2020 and 2022, Jamieson remained as Chief scientist of the DSSV Pressure Drop during the Ring of Fire Expeditions. During this time he led an expedition to the Eastern Mariana Trench and the Sui Shin Hole, and participated in the Philippine Trench expedition that found the wreck of the USS Johnston DD-557 which included a dive to over 10,000 m on the location where, in 1951, the Danish Galathea Expedition proved life existed beyond 10,000m deep. In 2021 he led a Minderoo Foundation charter on the DSSV Pressure Drop to the East Indian Ocean where he completed six submersible dives to the Wallaby-Zenith Fracture Zone and Wallaby Cuvier Escarpment between depth of 6600 and 4400 metres. In 2022 he led the DSSV Pressure Drop expedition to the trenches around Japan where he completed the first manned dive to the Ryukyu Trench at 7322 metres with Victor Vescovo, and 9137 metres deep at the base of the Boso Triple Junction in the northern Izu-Ogasawara Trench. Notable publications In 2015, Jamieson published a book entitled The Hadal Zone, Life in the Deepest oceans with Cambridge University Press, which was nominated for the Royal Society of Biology Book of the Year award (2015), and endorsed by film director and explorer James Cameron. He wrote the forewords for John Quentin’s 2021 Global Watch fiction novels, The Galathea Legacy and the Vernadsky Ultimatum. Notable publications include a paper entitled Bioaccumulation of persistent organic pollutants in the deepest ocean fauna, published in Nature ecology & evolution, Fishes of the hadal zone including new species, in situ observations and depth records of Liparidae, published in 2016 in the journal Deep Sea Research Part I. Jamieson was part of the team that led to the discovery of microplastics at full ocean depth, and was involved in a recent campaign with the WWF (Call it plastic) to name a hadal species Eurythenes plasticus. Deep-Sea Podcast Since 2020, he has co-hosted the monthly Deep-Sea Podcast with Dr Thom Linley of Armatus Oceanic and Captain Don Walsh known from the 1960 Bathyscape Trieste dive to the Mariana Trench. During this time he has interviewed notable guests such as Dr Glenn Singleman, author Susan Casey, UN secretary General Michael Lodge, His Serene Highness Prince Albert II of Monaco, and film director James Cameron, among others. In