Deep-water observation of scalloped hammerhead Sphyrna lewini in the western Indian Ocean off Tanzania
Moore, Alec B.M.; Gates, Andrew R. ORCID: https://orcid.org/0000-0002-2798-5044. 2015 Deep-water observation of scalloped hammerhead Sphyrna lewini in the western Indian Ocean off Tanzania. Marine Biodiversity Records, 8. 10.1017/S1755267215000627
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Abstract/Summary
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.
Item Type: | Publication - Article |
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Digital Object Identifier (DOI): | 10.1017/S1755267215000627 |
ISSN: | 1755-2672 |
Additional Keywords: | shark; elasmobranch; bathypelagic; Ruvuma Basin; vertical migration |
Date made live: | 17 Mar 2016 15:26 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/513283 |
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