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Lookup NU author(s): Dr Alan Jamieson,
Dr Thomas Linley
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© 2020 Elsevier LtdThe first direct observations of the diversity and density of benthic epifauna from hadal depths was reported in 1965 from depths of 7300 m in the Puerto Rico Trench. The most striking part of the report from was an account of observing 200 snailfish (Liparidae) during a one mile transect by the bathyscaphe Archimède - an extraordinarily high-density of fish for hadal depths. In 2019 the submersible DSV Limiting Factor revisited the exact same site in the Puerto Rico Trench. No snailfish were observed. However, a large number of the holothurian Peniagone sp. were seen in a density similar to that reported originally for the snailfish. The holothurian has a similar exterior colour, texture and morphology to the snailfish. It is concluded that the reported hadal snailfish of the Puerto Rico Trench was in fact a misidentification of the holothurian Peniagone sp.
Author(s): Jamieson AJ, Linley TD, Stewart HA, Nargeolet P-H, Vescovo V
Publication type: Article
Publication status: Published
Journal: Deep-Sea Research Part I: Oceanographic Research Papers
Print publication date: 01/08/2020
Online publication date: 20/06/2020
Acceptance date: 05/06/2020
ISSN (print): 0967-0637
Publisher: Elsevier Ltd
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