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. 2024 Jun 7;14(3):20230072. doi: 10.1098/rsfs.2023.0072

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© 2024 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Examples of synthetic fin rays: (a–c) Fin rays with ligaments of increasing density — Examples of synthetic fin rays: (a–c) Fin rays with ligaments of increasing density; (d) coreless fin ray (i.e. no ligaments connect the hemitrichs); (e) an ‘all-rubber’ design; and (f) ‘all-PMMA’ design.