Deep-water observation of scalloped hammerhead Sphyrna lewini in the western Indian Ocean off Tanzania
Deep-water observation of scalloped hammerhead Sphyrna lewini in the western Indian Ocean off Tanzania
A scalloped hammerhead Sphyrna lewini was observed opportunistically from a remotely operated vehicle 1 m off the seabed at 1042 m depth, during hydrocarbon exploration activities in the Ruvuma Basin off Tanzania. The observation, which occurred during night hours, is the deepest accurately recorded for this species and the first deep-water record for the Indian Ocean. The record adds support for the occurrence in deep water during night hours being a widespread and possibly common behaviour in this species, and further expands a small but growing literature that meso- and bathypelagic environments may be of greater importance to elasmobranchs previously considered to be primarily epipelagic.
shark, elasmobranch, bathypelagic, Ruvuma Basin, vertical migration
e91
Moore, Alec B.M.
913eff02-1997-485c-865c-acd92b6619a2
Gates, Andrew R.
327a3cc6-2e53-4090-9f96-219461087be9
24 June 2015
Moore, Alec B.M.
913eff02-1997-485c-865c-acd92b6619a2
Gates, Andrew R.
327a3cc6-2e53-4090-9f96-219461087be9
Moore, Alec B.M. and Gates, Andrew R.
(2015)
Deep-water observation of scalloped hammerhead Sphyrna lewini in the western Indian Ocean off Tanzania.
Marine Biodiversity Records, 8, .
(doi:10.1017/S1755267215000627).
Abstract
A scalloped hammerhead Sphyrna lewini was observed opportunistically from a remotely operated vehicle 1 m off the seabed at 1042 m depth, during hydrocarbon exploration activities in the Ruvuma Basin off Tanzania. The observation, which occurred during night hours, is the deepest accurately recorded for this species and the first deep-water record for the Indian Ocean. The record adds support for the occurrence in deep water during night hours being a widespread and possibly common behaviour in this species, and further expands a small but growing literature that meso- and bathypelagic environments may be of greater importance to elasmobranchs previously considered to be primarily epipelagic.
Text
Deep diving Sphyrna lewini MBR_after review_AM.pdf
- Accepted Manuscript
More information
Accepted/In Press date: 11 May 2015
Published date: 24 June 2015
Keywords:
shark, elasmobranch, bathypelagic, Ruvuma Basin, vertical migration
Organisations:
Marine Biogeochemistry
Identifiers
Local EPrints ID: 390066
URI: http://eprints.soton.ac.uk/id/eprint/390066
PURE UUID: 67e45e8a-a584-44a4-a052-f1677fc7bf0b
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Date deposited: 17 Mar 2016 15:14
Last modified: 14 Mar 2024 23:11
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Author:
Alec B.M. Moore
Author:
Andrew R. Gates
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