19 Tonicella marmorea

19 Tonicella marmorea

Dorsal view of intermediate valve under high magnification of Scanning Electron Microscope (SEM). Barents Sea, Arctic. © B. Sirenko.
Chitons sense the environment through aesthetes (sensory tissue) exposed on small caps on the surface of the shell. On T. marmorea the caps are arranged in an offset grid pattern.

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