Priede, MontyJamieson, Alan JohnBond, ToddKitazato, Hiroshi2024-07-162024-07-162024-02-01Priede, M, Jamieson, A J, Bond, T & Kitazato, H 2024, 'In situ observation of a macrourid fish at 7259 m in the Japan Trench : swimbladder buoyancy at extreme depth', Journal of Experimental Biology, vol. 227, no. 3, jeb246522. https://doi.org/10.1242/jeb.2465220022-0949https://hdl.handle.net/2164/23823Open Access via the Company of Biologists agreement We thank the Captain, crew, scientists and company of the DSSV Pressure Drop on the ‘Ring of Fire’ Expeditions Japan I and II. We also thank Megan Cundy from the Minderoo-UWA Deep-Sea Research Centre for assisting in video analysis and anonymous reviewers for significant improvements to the manuscript. We acknowledge access to core facilities at the University of Aberdeen, University of Western Australia and Tokyo University of Marine Science and Technology. I.G.P. marks 50 years since publication of ‘The effect of swimming activity and section of the vagus nerves on heart rate in rainbow trout’ in JEB (doi:10.1242/jeb.60.2.305).52007201engDeep-sea fishTeleostsSwimbladderBuoyancyHydrostatic pressurePhysiologyQL ZoologySupplementary Informationhttps://cob.silverchair-cdn.com/cob/content_public/journal/jeb/227/3/10.1242_jeb.246522/2/jeb246522supp.pdf?Expires=1724156379&Signature=V8q8NhhSYEZwaqW4BVhyVUHdLtRnI2IyQV5UnhS-5WNdIYQZtO3WAs1Fy7turHefpTG9XWqKwkzbgAeIYsUD2SQ61umb-Twwf-by26lJIc4iS1CF5EFGZoUOL3zq~K3r2VmfKr9gFkq6sk0Ztk1fCn9rs0MfI6k26e7zBST0dQm2OZ53mH51YEczDXyfiCAN59b9SmXNHHWaTf4l0qTU1aOT30ZSjVpEnN4rvBeN4RBM8aBrLl4iAM3SVZrnLNmpqzEqMpVNovNFsjeftuYLE0K8dDNzEWL-HKREBEp-myboKMBmuWy4uqpi4rJSe9tFnTn~wgNbMSabG08HWuAyfg__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGAQLJournal article10.1242/jeb.2465222273