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OPal logo: a red-to-blue rainbow shaded simple rendering of a regular echinoid with lines of paired white dots representing the ambulacra and a central white circle representing the periproct. The OPal echinoid forms the "O" of the journal's abbreviation, "OPal", with the "Pal" written in light blue.

Volume 3, No. 1

Published 30 January 2026

Hypotheticals