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So you have to teach invertebrate biology…

The cover of this special 25th Anniversary issue features the stunning photographs of marine invertebrates by Dr. Arthur Anker. It is designed to convey the same message as the following editorial on teaching: Revel in the wondrous diversity. Identities and sizes of the animals on the cover are left as puzzles for readers to test their knowledge: To what phylum or subphylum, class and family, does each belong? Roughly how big are they? Answers may be found at the end of the editorial, or via an interactive puzzle on the American Microscopical Society website (https:// www.amicr os.org).