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. 2023 Apr 25;13:6714. doi: 10.1038/s41598-023-33415-5

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Sample sites () located on the fringing reefs surrounding Lizard Island, located in the northern section of the Great Barrier Reef, Australia (map courtesy of Ooid Scientific). Photograph of a (b) blacktip reef shark model, Carcharhinus melanopterus (Simpson S.D.), (c) photograph of a snorkeler (180 cm TL, Asunsolor-Rivera A.) (d) photograph of a green sea turtle model (non-threatening model, Lester E.), (e) PVC pipe (control object, courtesy of Ooid Scientific) and (f) transparent Perspex (negative control object, courtesy of Ooid Scientific). (g) Shark model attached to pulley system and remote underwater video system (RUVS) placed near the edge of the coral bommie. Large arrow represents the shark model moving towards the coral bommie. Small arrows represent the traveling direction of the line in the pulley system (g courtesy of Ooid Scientific).

Inline graphic — (a) Sample sites () located on the fringing reefs surrounding Lizard Island, located in the northern section of the Great Barrier Reef, Australia (map courtesy of Ooid Scientific). Photograph of a (b) blacktip reef shark model, Carcharhinus melanopterus (Simpson S.D.), (c) photograph of a snorkeler (180 cm TL, Asunsolor-Rivera A.) (d) photograph of a green sea turtle model (non-threatening model, Lester E.), (e) PVC pipe (control object, courtesy of Ooid Scientific) and (f) transparent Perspex (negative control object, courtesy of Ooid Scientific). (g) Shark model attached to pulley system and remote underwater video system (RUVS) placed near the edge of the coral bommie. Large arrow represents the shark model moving towards the coral bommie. Small arrows represent the traveling direction of the line in the pulley system (g courtesy of Ooid Scientific).