I understand that limpets have a mirror eye based on a relector of crystallized guanine. Is this true, and do scollops have the same kind of eye, or better put, what kind of eyes do scollops have, ?
Thank you

From the context I take it you mean scallops.

Yes, scallops and limpets use reflector eyes. The composition of scallop eyes is given in the abstract of this paper:
http://www.jbc.org/content/275/52/41064.full

This Austrian site has lots of information about different eye types in the Mollusca.
http://molluscs.at/mollusca/index.html? … /eyes.html

"Hope is a duty from which palaeontologists are exempt."
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